Not sure if my suggestions are new, but will list them here. Had Action for a couple years now, but really wish they would add the following.
1) A third audio track for recording. So I can do Game/Microphone/Teamspeak all in sep tracks.
2) Push to talk release delay. Can't believe this isn't in there. Would like a slider to be able to adjust that. I usually use about 250ms on other comm apps.
3) The ability to blacklist certain apps from the FPS hud. I hate seeing it in VLC or other apps I don't want to record in.