To me the "ultimate cruiser" question cannot be answered until another question is answered first. And that is, who's going to maintain and do the work on the boat?
If the answer is "I am" that immediately defines a whole different type of boat than if the answer is "somebody else will."
As to the " ultimate trawler" question, I don't know much at all about trawlers. So I'd have say my ultimate trawler would be one that's real efficient to use, has an easy and fast to deploy and retrieve trawl gear setup, and makes a lot of money for its owner.