This has probably been said over and over again but it'd be cool to see Engineer units get XP from sweeping mines. Currently you will only see Engineers/Pioneers get veterency with Flamers and their veterency bonuses don't even effect their combat.
The 50cal should just be moved to T0 but required either T1 or T2 to be built for it to unlock, that will give USF an option to use combined arms if they go Captain.
Whilst we're at it a light mortar at T0 requiring an unlock would be amazing... whilst we're at it the same for OKW would be great to actually give the change for something other than just blobbing.