The game is balanced for 1v1 play, and at the top level at that unfortunately, so I'm not sure your ideas have merit.
You just don't see emplacements in top level play and the emplacements commander seems to be designed more for multiplayer games. Although there are a few players who are very good with the Brits very few of the top 150 seem to touch them with a bargepole. I've never seen the emplacements commander used in competitive play ( though Dusty did click on it by accident in one game and lost inside 10 minutes!).
I think you might be better off asking for help in combating emplacements rather than asking for balance changes, or maybe try playing the Brits yourself ( according to your playercard you play them 0.6% of the time and OKW about 50% of the time).
Bear in mind that brace only gives warning of an attack and allows a response from the player. Once it wears off any axis player has plenty of time to take out the emplacement. Counter-battery is easily countered by simply shooting and scooting.
