Update: I finally gave MercTech a try. I do miss some of the features from MW5 Reloaded, rebalanced missions, expanded turrets, HUD, etc. Liking MercTech a lot more. It has a lot missing from TT.
MercTech balances all of the weapons to TT standards. With 3 Damage Models to choose from Vanilla, Tabletop, and MercTech. What these do is increase weapon damage curves to match TT (except the vanilla one) and offset the Doubled Armor. Based around the 10 second round of 6 shots per minute. All of this while giving a lot of weapon variety. Do you prefer faster firing low, damage weapons, or slower firing, higher damage? The MercTech model increases Ballistic lethalness. There is a .csv download with it detailing the different models.
On top of this there is ammo switching programed in (Backslash key) for LB-X ACs, SRMs (Standard, Inferno, Deadfire), LRMs (Standard, Deadfire), and rate of fire switching for UACs. SRMs now can be locked on, deadfire ammo for normal behavior, and SSRMs which must be locked to fire and do not miss. Critical hits which mimic TT, Heat scale which with Mech slowdown, cursor shaking upon high heat, and random rolls for ammo cookoff and shutdown.
