When you put people in a FT it makes their trackers set to the FTL automatically.
This is good but when the SO screams in your ear to get on SL because he is getting capped by a lurker somewhere, you need to stop, right click your headset, set the tracker back to SL then go to him.
Also I see a lot of new players straight up not knowing how to set tracker to someone else. A button on the UI that pops up when you click the tracker to change tracker or even a separate tracker for the fireteam would be banger.
You could even do this for the xenos, where you can track a leader and queen simultaneously.
I have zero idea how UIs work so just screaming into the void. Any thoughts?