My favourite though: In-game voice chat. This will do away with problems like setting up a group chat on steam, people having vent or teamspeak.
You just hook up your mic and people on your team can hear you. been waiting for that since launch! Hooray!
It's going to be a lot of work for little rteturn. WoW has had intigrated voice chat for 3 years now, yet my Guild STILL prefers to use Ventrillo (for WoW, STO, and two other MMOs we have a presence in.) I think (like WoW) wou'll still see folks goring the in game chat for Ventrillo or their favorite chat system mor often than not. What I don't like is that it puts more of a direct load on the STO server and Cryptic bandwith in game, and that's detrimental (imo.)