We're undergoing some major changes internally right now (all good things, just time consuming and depriving us of development resources). Thin of it like spring cleaning. Until we complete some of these internal changes, larger features won't be ported over.
This is a question we've had from other communities as well and is taken very seriously, it's just a matter of time and resources as to whether or not we reimplement or replace the team feature.
Should be noted, however, that we still have all of the data regarding any previously existing feature and should we bring back any of those associated features it's very likely we'll bring back that data as well.
I know that's not the ideal answer, but it's the best one I can give right now. PM me if you guys have any further questions. I'm having a hard time keeping up with all of the community forums at the moment, but I still love hearing from you guys.