Fireteam Voice Channel / Comms
I'm not sure if this has been suggested in the past, however it would be great to have a voice channel option for your fireteams as well. As an SL it is useful to assign fireteams and I know effectiveness varies from SL to SL, but if there was another voice channel dedicated to just the fireteam you have been assigned then fireteam leads could easily coordinate with just their fireteams rather than clogging up squad chat.
Just an idea to help make fireteams more effective. I guess its not what happens in IRL and I'm sure you could just use local chat and stick with your fireteams, however just a thought.