It can get very annoying when you have a full party, where the party leader is afk, so either everyone goes solo, or you wait for the party leader to return to continue.
I think there should be an option to vote to kick the party leader, where if 2 people want the leader kicked, they should then be forced to go solo (i.e. the game acts as if they have clicked go solo), so that way, the party can move on.

Also, as a completely different suggestion, can we have our chat in a different colour? It can make it easier to tell if someone has responded without having to actually read the text.