Weapon would be re-balanced according to number
the total DPs of the squad is balance issue the number of different weapons is design.
Comminication is also a reason to avoid 75% of weapons replacement. It would be better if some standard was used for normal weapons (not lmg/AT) like half the weapons or all in this case 2 or 4.
Number of weapons and their DPS are both connected to how the unit works and is therefore both designed and balanced. You can barely separate these.
There is no reason to standardize this as long as the player knows what is going on.