While I understand and partially agree with the OP, I think taking away assets from the game kind of "babysits" or "appeases" the people that are unable to tactically break away and attack the mortar fob. I would rather have mortars back and take away the area attack. With this option, I believe that it would actually reinforce teamwork on Blufor. While yes, you can mortar the cache 24/7, until you take away the hideouts, it does nothing. The mortars are not going to destroy the cache and when there is a break in the mortars, a good opfor team will ambush the invaders quickly.
I'm still waiting on the commander to be able to deploy the unknown cache and move it when needed like in INS v2.0.