Can we get an option to ask other players to follow? Seems relatively painless, and it would make a few things easier. It's pretty minor, but a little ease-of-life option seems like a good idea.
I have often helped other players by letting them follow me through a keyed door. Explaining to them how to follow is also good for them...but also very tiring after the third or fourth time in succession.
This could also act as a pre-authorization for said following. I imagine it looking like the race game challenges. When Thomas the Train does the "Follow Me" action it shows up as a speech bubble with a button others nearby can click on. They would then not have to be OK'd by Thomas. Could have a targeted mode and a group mode.