I've only read the first 1602 series, so I don't know if he appeared in any of the other 1602 spin-offs.  But he was a great character, and I liked his paternal relationship with Parquar.  However, I don't think I'd be keen on seeing him in mainstream Marvel U.  He'd be a fish out of water, and all the information & contacts he had back in 1602 would be useless.

I love 1602 one of the best series they ever did, but 1602 nick would be pointless in the modern world, Maybe if they did a spin off and the mainstream characters met their past selve's could lead to something interesting seeing how modern day Fury would deal with the problems back in those days, I mean we already had Cap and a few others dealing with Modern society from their stand point we could always turn it around... Or would that be to much like the current Batman story and when ever the hell he is!