@longhead You can make a map with custom lobby options that can do what you described that you want, but you'd have to code the functionality to make it happen. You can look at what some adaptive maps do for some examples of how custom lobby options can be set up.

Power is a heavy lifter in the score system, and should be tuned down a bit. The score has in most games no meaning anymore, except who has build the most power generators early on. Kills, mass income, reclaim amount and energy should be key factors, not solely based on energy.