I stoped playing right around the time this change was implemented. What I felt back then was that while you are right in principle, in theory what happened was

I stoped playing right around the time this change was implemented. What I felt back then was that while you are right in principle, in theory what happened was that the power level of a lot of interesting cards dropped so much they weren't playable anymore. So while my Mogg Fanatics got more complex, it didn't really matter because at that point I had to drop them from my deck, usually replacing them with something more dumb and mana efficient.