love the new FCU features but came up with a few of my own you might like
the ability to save multiple FCU configs for different uppers, or different gametypes, RoF speeds etc
hear me out,
ditch the lcd in favor of a bluetooth interface and only see the FCU when you take out the battery to charge it, or since you won't need the control stick, completely encase the FCU in Epoxy, and have it shockproof/water proof
then a tablet, or smartphone app
probably not do-able
built in charger?
like maybe an AC port with small wall wart like some high end flashlights?