Rinix,
Thanks for the feedback. I've adopted most of your suggestions and put this into my StreamDeck.

Top left: Switch profile
Bottom left: Profanity Button (mute teamspeak ;-) )
The first block of 5 columns on the left is related to the viewport or managing ammo.
I've skipped some of your suggestions like F and H, because I don't need to lift my hand from the keyboard and look what I need to press because I can press those buttons I can press instinctively.
The block of 6 buttons in the lower right are for formations.
The block of 6 buttons in the upper right are for map, engine on/off, commander, gunner, troops load and unload.
I'll refine this over time as my needs become more clear. :-)