Excellent changes.
The only thing missing is the UKF special weapons regiment. Miragefla had a buff/bug fix for Hold the Line in his version. This is needed because the ability as it is know is more of a noob trap and will likely just waste 250 munitions for nothing. Also the resupply HT comes way too late at 4 CP and the weapon drop should not require the weapon upgrade at HQ.
Also I would suggest a change to UKF bolster. Make it so you have to pay the normal price for bolster at HQ as it is now. But then make every squad pay 45-60 munitions for the extra model. Make it a weapon upgrade that takes up one slot like the the VSL upgrade for Grenadiers. That makes Bolster cost munitions and prevents UKF players from being able to use muni-based abilities like grenades, off-maps etc so much. It also makes bolstered infantry sections come later. It also prevents 5 man 2x bren squads.
BTW: Both miragefla and you have made these mods and they both are really good, I am confused why the actual balance patches end up being so meh most of the time. Is it just Relic's "scope" or what is the matter?
Don't you realize you're just cementing 5man IS meta and skipping Bren tech even more? This is the same thing people complained about before that encouraged Tommy spam. I only see brens on 4vs4.
Right now for brens and five man tech its 300mp 50f, four squads of double brens including two medkits is 440muni. So instead players skip Bren tech and do literally anything else. Your changes would put that price up to something like 500muni, pretty crazy for 1bren squads that would still get clubbed by sixman fussies or VSL grens.
So what would players do? Likely ignore Bren tech and spam five men rifle sections because side teching for one lmg that's already worse than a single BAR or MG42 would be a bad use of resources. Much easier to spam vanilla 5man sections and mines, then get that Cromwell faster with the fuel and MP savings. (This also partially covers for the fewer snares ukf has)
Basically top players do things for a reason.