The constant adaptation issue hasn't been fixed either. He can still assimilate any material he touches (including that of nigh-indestructible weaponry), giving him adaptive capabilities that can push him past tier 7. 

I'm also pretty sure that a tier 7 wouldn't be able to power a city for a month. Or even a week. That's a MASSIVE amount of energy, and the suit would functionally never be in danger of overloading.