The UKF mortar pit's problem lies in its very design: it's a big investment in a static emplacement you lose if you lose its position. 350 MP is a big deal.
Relic's adamant about not giving UKF a proper mobile mortar outside of commanders, so here's an idea to make it actually useable outside of very, very static games.
Split it in half.
» The mortar pits costs 175 MP, has half the health, half the popcap, and only one mortar.
» It has a 175 MP upgrade that doubles its health, doubles its popcap and adds the second mortar.
We know it's possible to do this because an abandoned balance patch did.
A 175 MP mortar pit is something you can afford to lose. If your mortar pit's in a good position and you have spare MP, you can upgrade it, effectively building a second pit.
How would veterancy, and the pits smoke work with the half mortar pits