I was very disappointed in the discussion as it did not address any of my concerns with the system.
The discussion on dynamic queue was the only part that really even approached discussing issues I have with the system, but nothing was mentioned about people who simply prefer not playing with organized groups and prefer the solo unorganized environment. Of course with enough games you are still going to get to your appropriate MMR and the best people will still rise, you'd really have to fuck up the system for that not to remain true. There could still be concerns with how this will effect the top of the ladder, but as someone who generally doesn't try to get above gold that doesn't particularly concern me.
The things that most concern me with the new champion select weren't even mentioned, let alone discussed. The closest thing was a short mention of if the new system would reward one trick ponies.
There was nothing about the fill feature and how the new system takes away incentives from being flexible with roles and champion picks. In the current system maining a role/champion is already one of, if not the best, ways to climb and improve. In the new system it is forcing you to emulate being like pros and picking roles and champions at the start of the game. The thing is that not everyone likes having to pick a role, let alone a champion at the start of the game.
Personally I like the current system where I get a gauge for what position people are comfortable with playing through chat, seeing the bans, and then seeing initial picks to determine what I want to play. Even when I queue with a group of friends I hate having to pick my role before things have even started, having to do this with strangers is going to really going to lower my desire to play any mode with the new champion select. With the current system I could see that we have Master Yi jungle main and see that top is open and pick something like Maokai to give our team some bulk and peel for later in the game when Yi is split pushing and we're defending the 4v5 push.
With the new system I'd have to queue into and get selected for top for that scenario to work. As someone that likes to play tanks top this new system is pretty much going to make me never play top. With my experience in League I've always found my most useful position to be in working around the rest of the picks of my team and the enemy. In the current system I can comfortably grab top when it is open and I see that our team could use a tank top. In the new system if I want top I have to specifically pick top and then rely on my team picking around me being a specific tank. Sure I can switch which tank I pick once it gets to my turn to pick, but everyone is going to be picking their intended picks around what you initially lock in. If the initial picks and bans don't gel with my champion pool then I'm probably going to have a bad time going top, so I'm probably just not ever going to bother queuing for it in the first place and never play it again because of the new system.
I like playing different roles depending on the situation and it feels like the new system is just robbing me of this and taking my desire from playing anything but ARAM.
The "fill" feature is going to nothing to alleviate this issue. When you fill you are still going to get assigned an inflexible role dictated by the new system. Depending on your MMR what role is least popular will fluctuate and you might be surprised that you were assigned jungle instead of support this game. However, it still doesn't fill the flexibility of filling in the current system. Accommodating players that were comfortable with fewer roles and picking champions/roles to help a team come together was a very rewarding aspect of being a well rounded player who was willing to fill and it is a viable method for climbing. Now that play style is being stripped from the game and you are going to be incentivized to fit into the new system of maining a role like the "pros" even if you don't like playing the game that way.
This podcast didn't really address any of this and it seems like these issues are being completely ignored because a large percentage of the player base just want to pick a role and not have to worry about discussing roles in champion selection. If you are a player that likes to fill and not be forced into a specific role before picks and bans have even started you are being ignored and your playstyle is being heavily disincentivized and the play style of maining a role/champion, which was already probably the most rewarded way of climbing, is being essentially forced onto everyone.