I agree that Tim, Kon and Bart should hve their friendship restored but I don't think they all need to be on a team together for that to happen, personally
In answer to your question, I would *love* Netflix to give a season 3 to the YOUNG JUSTICE cartoon. I'm not sure who I'd like to see s a villain but I would like to see more of Artemis dealing with the loss of Wally and maybe some ore of the runaways (like Static and others) who Blue Beetle found.
I'm sure there's more but those are 2 of the main things I can immediately think of (more may occur to me later!)
Cheers.
James.