At the risk of it being buried under dozens more posts about this I'd like to suggest a different mechanic entirely: Nerf brace duration (obviously) while actually allowing the emplacement structure to be decrewed at 0% health instead of destroyed entirely. Once it is decrewed it could take a bunch more shots before it is destroyed entirely, much like all other indirect fire weapons. This would allow for counter play for both UKF (defending veterancy, not wasting resources to recrew) and Axis (sniping the emplacement to stop it temporarily and removing veterancy) without the major all-or-nothing approach of dying too easily or being almost impossible to take down.
Sounds cool.