The best fix for the mortar pit would be to replace it with a normal mortar squad and make the pit a garrisonable emplacement which gives the mortar some sort of bonus like it's with the Vickers when garrisoned and Vet 1.
Emplacements are the feature of UKF and they won't be removed if you like it or not. Plus it's not the topic for this thread.
Hiring the people (for really small amount of money) who knows the game and they have plan how to fix it like Cruzz while meantime Relic still earns is the way to give the game maybe even a second youth. Chances that it will happen are smaller than winning in a lottery.
I have small, just a little tiny hope that we will see some good actions (according balance/new map pool) from Relic side in Autumn.