I just joined a party for the Sovereign Slime mission, and went to stand on the elevator while waiting for the party to follow.
Without warning, the party leader kicks me, and by the time I realize why I'm looking at a loading screen and a pair of buttons, my 10 seconds to decide which way to take the elevator are almost up.

Yes, it's arguably my fault for being slow at figuring out why I'm seeing a strange combination of interface elements that doesn't normally make sense, but it's unpleasant for me as a player (both immediately and in terms of overall game enjoyment/addiction), (should be) easy to fix, and fixing it would not, so far as I can imagine, noticeably negatively impact anyone else - it may be a low priority change, but I can see no reason not to make it at some point.