Yeah, this new "feature" is awesome... especially when your premade team disbands after every match and you need to reform. While it's just a constant annoyance for fleets and established players who run with folks on their friends list, it pretty much kills any chance for a pugger to develop a team throughout the course of a night and, you know, socialize and make new friends.
while they consider changing this for a few months i can give you all something to atleast help a bit...
/bind b "jointeam @erattiaan $$ tell @erattiaan x"
while era might not be your "teamleader" but wtf just whoever usually start ur teams.. and then everyone hits this at the end of every game.. (sends x or request to join team)
edit: on a second thought .. everyone should get the "spam era with x" keybind.