They should have reworked {{summoner:2}} and 
instead of nerfing them, and now even more, without mana pots could have had a lot more relevance and with the change on wards an small rework on {{summoner:2}} could have made it more important, specially because practically the Blue Trincket is gone and it is available only after level 9.
Princess Emma2 votes{{summoner:2}} Was a god send in Twisted Treeline, and it allowed me to climb the 3v3 ladder with ease on my earlier account. It even had it's uses in Summoner's Rift, but the new blue trinket I would say is a little better than Clairvoyance now compared to the old one since you can have as many on the map as you would like and has a short-ish cool down.
The thing is.... I don't like Summoner's Rift as much as I love Twisted Treeline so the removal of it has turned me off from doing ranked / normal TT.
My favorite spell since I play mages a lot and love spamming, I even have a full page of mana regeneration runes.
The removal of those Summoner spells are the only preseason changes that put a hole in my heart and I didn't even know they were gone until I joined a Twisted Treeline match, it was very disheartening.
Despite that, if Riot wouldn't rework them, removing the would probably be the best option so trolls will have less options to troll with.
Packun Flower1 votesMeanwhile :
Riot:
"Welcome to the League of 
we remove summoner spells that aren't flash, I think."
Cherysse1 votesYeap, it is sad.
Trebbi1 votesEven with the lack of mana pots the new mastery makes up for it. Honestly these summoners were bad and I only saw disconunu using it.
I dont see how they could revamp these to be usefull when you have so much ingame items that combats the issues these summoners tries to cover.
Level 9 trinket and mana items.
Cherysse1 votes**Well: **here goes an idea of how it could be reworked
: now only affects the user, regenerates 6% max mana per second for 6 seconds. As long as the buff lasts the user gains 25% Cooldown Reduction and it's Cooldown Reduction cap is increased by 5% (up to 50% with INT mastery and CDR items/runes).
-It would be a much better option for poke champ/mages, Ryze or anyone with Low CD abilities who wants to ramp up into an spam rage-
{{summoner:2}} : Champs revealed are tracked (does not reveal stealth) and they have their movement speed reduced by 12% for 5 seconds, in that way it could be a good ability to have in any team, if you are being chased or you are chasing use CV, it adds an use without being OP (12% slow is not that much). In that way the support could use it to help allies from any point in the map without it's effect being too overwhelming.
Done, they become useful without being OP.