I know the thread is loooooong but a lot of your answers are contained within (and in the sister threads). Short answer is yes, though it is the opinion of many that you should be careful when concocting situations not to over use or ideas or to railroad/sideline your devestator. There are 101 ways to do it, and having the dev definitely creates a GMming challenge, but that's okay if you ask me because DW isn't a beginner's game (despite that some of the marketing doesn't mention this).
BRB, going to play palladium now to refresh my mind on how crap that system was in order to further destroy this particular thread
The main problem I was having with the system was, as I said, that MDC armour functioned like hit points. I converted it into a punch-through system which makes for more heroic action if the guy inside survives an MDC punch-through and keeps on fighting.