Brace is just a bad idea from the beginning. Will somebody finally try at least to think what I wrote in many UKF treads? Make sapper deconstruct emplacements with say 50-60% resource refunded. This will make them: less static, will make UKF bleed if they decide to move them, add some more dynamisms to emplacement play making it more surprising as the enemy will (to some extend) not expect if the emplacement is still there. And most importantly, it will make it possible to get rid of brace altogether or just nerf it (muni paid, shorter duration, or the mixture of both).
Actually sapper can already deconstruct emplacements for 100mp refund, but the whole system still suck.