many more hours of balance problems
Exactly. I mention those combos not because i like the idea, more like i see it bringing more problems than anything else.
Theres going to be no drawback option when someones figures it out the 2 or 3 more competitive combinations. You'll be just brainstorming how to get rid of the useless abilities or how to get all the best abilities on 1 commander (not OP at all, right?)
PD: i don't get why you say this would be easy to implement when it's an overhaul of how the commander system works right now.