[...] At this point, I give up; give us your changes (if any) for the forementioned units as a starting point, and we can talk.
If it is that simple, why don't you go through every unit and every weapon, put every unit/weapon in their respective classes and weapon combinations and describe the numbers for us as MrSmith kindly requested a while back?
[...] Lower quality troops have -20-30% DPS, all weapon picked by elite infantry have +20-30% DPS.
The idea isn't that great, as it'll just force players to get the biggest, most expensive, best bonus, and most elite units to win. Giving even more bonus to elite will just result in messy and boring DoW3-gameplay all over again.
If dropped weapons using one commander was really a problem, there'd be more threads about it.