Here is a short list of things which came to mind. If anyone can groove with them and modify/add on to the list, go for it. If you don't like, give it a thumbs down.
-DX12
-Add AH3 to Windows marketplace
-Advertise on popular youtuber channels
-Allow free, low player arenas without subscriber creation
-Joystick/hardware donation pool
-Phone/pad client
-Simplify map creation tool (make it as easy to pick up as mspaint)
-Built in mp3 track playing via in-game playlist
-Perk point marketplace (unique skins/insignias)
-Remove training arena and set aside space on running maps for training
-Skin pack installer, which inlcudes all the free skins
-Aces High Launcher which includes discussion, screenshots, artwork, streams and videos by players (like steam)
-Map icon for twin engine planes
-Field number called out when under attack
-3D stereoscopic option (not VR only)
-Option for higher quality sound codec for voice comms in-game.