It would be nice to be able to reiceve a champion's Mastery Token for a great performance also in ARAM. It doesn't feel fair that to get that sort of recognition one has to play in Summoner's Rift only. ARAM can be quite as challenging (if not even more so usually)
CaptainAntiHeroz2 votesless because it is challenging on rift more because some people would rather just play aram than SR
Sukishoo2 votesThey said not long ago they were looking into ways to make this possible but it is a bit harder as ARAM is a bit easier to achieve higher grades on. So I'd guess it will still be sometime before they get it going.
Jesi Oni1 votesIt would be nice to sell mastery tokens that are polluting my inventory space.
TheUrbanKitsune1 votesGetting S's on ARAM is way easier though, lmao. ARAM is less skill and more 'which team rolled the better comp'. You can still earn mastery points on ARAM and get up to level 5, but I disagree with ARAM being valid for tokens.
Mastery is supposed to represent your time and dedication to learning and playing a champion, and if you only ever play that champion on ARAM, you don't REALLY know how to play them outside of on a minor mechanical level since ARAM is just team-fighting in a narrow alley-- you don't even need to CS.
CaptainAntiHeroz1 votesGetting S's on ARAM is way easier though, lmao. ARAM is less skill and more 'which team rolled the better comp'. You can still earn mastery points on ARAM and get up to level 5, but I disagree with ARAM being valid for tokens.
Mastery is supposed to represent your time and dedication to learning and playing a champion, and if you only ever play that champion on ARAM, you don't REALLY know how to play them outside of on a minor mechanical level since ARAM is just team-fighting in a narrow alley-- you don't even need to CS.
If someone gets and S on say......... 
they damn well better get something for it
TheUrbanKitsune1 votesThey'll get some mastery points and maybe a chest. :D
Minarde1 votesGetting S-ranks in ARAM is definitely not easier. As of about a year and a half ago, Mastery grades were changed to be more consistent with SR. Prior to then, it was apparently harder to get S-ranks in ARAM than SR.
Moreover, skill absolutely factors into ARAM. If it was just luck, strong ARAM players wouldn't be able to consistently win. It's sorta comparable to TFT, where there's a balance between luck and player skill, and TFT explicitly has a ranked queue.
Finally, your argument about "Mastery representing time and dedication" would be reasonable if the Mastery system reflected that, but it doesn't. The only current requirement for high Mastery is five "good" games (and some Essence) at some point in a player's League career. There's no upkeep, minimum performance baseline, Ranked requirement, or anything to have Mastery actually reflect skill. Hell, someone could conceivably grind up to level 5 exclusively playing ARAM, play five SR games for tokens, and then go right back to ARAM. Someone else could spam thousands of SR games averaging D-ranks until they get five lucky games, and they'd have the exact same "achievement" as the first person. Limiting Mastery tokens to classic SR is much more of an annoyance for non-SR players than any sort of meaningful requirement for League players.
TheUrbanKitsune1 votesIdk man, I play a decent amount of ARAM and it's pretty easy to get an S. ARAM is one of the 'for-fun' gamemodes, it's definitely not as skill intensive. I'm not trying to offend anyone by saying it's not skill based... it's just not. A gamemode where you aren't required to farm for gold, need 0 knowledge of wave management or macro play, 'teamfights' are kinda just fun free-for-alls, and you don't even pick your champion-- team comps are completely random. Why do you think 'ranked ARAM' is such a meme? Comparing it to TFT is just naive. TFT, for one thing, is still very much in beta, and requires a completely different set of decision making skills and an understanding of the mechanics that go into the 'luck' based attributes. In ARAM you run it down at each other until one team wins. Do you see the difference here? I don't even like TFT but saying it requires as much skill as ARAM is kinda rude to people who do competitively enjoy that mode. It's fine to like ARAM-- I LOVE ARAM! I think it's hella fun, and I'm not ripping on that. It's also suuuper casual, and that's why I love it. After playing scrims or solo queue it's nice to relax and like turn my brain off and just play purely mechanically.
I'll agree with you that the mastery system is majorly flawed compared to what it's supposed to represent, but that's still what it's supposed to represent. Which is why I think Riot limited tokens to SR games only. You can't get them in Twisted Treeline either. Idk, I agree with keeping the tokens on the more competitive gamemode though. It's not like you get nothing for ARAM. Like you said, you can get up to level 5, plus still amass points in numbers.
Minarde1 votesFirst and foremost, Treeline is an atrociously low bar to compare to in terms of game features like Champ Mastery. Riot's neglected the game mode to the point that TT's the only PvP mode that doesn't grant paid Event Pass tokens. SR, ARAM, TFT, and even Nexus Blitz and ARURF have all granted Event tokens. Treeline hasn't for at least a year or two, and there's never been an explanation either.
Secondly, I'd prefer not to discuss Ranked ARAM here because it's polarizing, complicated, and, most importantly, out-of-scope. As an aside though, I can't remember the last time I saw "Ranked ARAM" used as a meme rather than as a serious request, so experiences clearly vary.
On that note, I don't think claiming that TFT is similar to ARAM is rude at all to people who competitively enjoy TFT. If anything, it's significantly more rude to the people who want to competitively enjoy ARAM to claim that ARAM isn't skill-based. I think one of the strengths of ARAM is that it can be a casual experience, where someone can just mindlessly smash into the enemy team. At the same time, it can be a competitive experience, where someone's breadth of skill is tested as they're forced to adapt to unusual situations. That's why I think ARAM's comparable to TFT. The specific skills required are obviously different, but there's areas hidden beneath the "LoL rAnDoMnEsS" facade that let players show off their abilities.
Anyway, back to the main topic of Mastery tokens. I agree with you that it makes sense to keep tokens in the more competitive queues (i.e. ranked). However, I think the intent behind the system was completely thrown out when Riot enabled Mastery tokens in the chaos that is Normals SR (and briefly URF). As far as I'm aware, Normals SR has never been considered a competitive experience. That's explicitly what Ranked is for. Given that Mastery tokens are already being granted in a casual environment, it doesn't make sense to me to not grant tokens across all of League's PvP modes. It feels like yet another example of odd SR favoritism, like those "Place 1 control ward" or "Get at least 10 vision score in a game" Missions. Trivial/simple to do for any SR player, but physically impossible for non-SR players.
