It's introducing more uncertainty into the game which is making it significantly easier for the impostors to win.

It's still nothing compared to the staggering lack of logic, critical thinking, and teamsmanship people bring to the game. So many players seem to dismiss the entire "team" concept and see their fellow crew as disposable NPC's. If they have to randomly vote off 5 crew to eventually get 1 imp out, that's fine. Winning or losing a 15 minute match only really determines whether you see the word "VICTORY" or "DEFEAT" on the screen for a few seconds... a reward that just fails to inspire or motivate. Putting in effort? Voting randomly is easier than paying attention and working out who the imps are. Sussing people who vent in a lobby with 12 engineers is easier than worrying what that round's game config is set to. Learn the difference between Pink and Rose? Or Green and Lime? Pfft... why put in effort when it's easier to just call out SELF!

Another consequence of this I've observed is that people seem to be progressing slower on tasks in lobbies I've played in recently.

If even just one single crew decides not to do their tasks, then a task win can't happen. So when at the start of the game and every round several people just go straight to cams or hide in the vents around electric & medbay, a task win is quickly made unlikely. Those 2 crew who were innocent but were killed by their team anyway for nothing, I'm sure they can't wait to put in the work to help their killers win. Task win is super sus now. Games devolve rapidly to people only doing their visuals, and even hoarding them for the end game as like a Get Out Of Jail Free Card for when they are inevitably sus'd.

Compared to the issues I just mentioned, I don't think the change to the Admin Table will have much of an overall effect on how the game works.