Oh, yeah. I could totally see Jimmy as The Flash. Rather ironic, since one of Jimmy's alter egos in the Silver Age was Turtle Boy (or Giant Turtle Man).
But since he has also been Elastic Lad:
it wouldn't be much of a leap to turn him into Plastic Man.
I could see Wild Cat working for Perry. (I had forgotten about him.) But of course you are right; the Chief would much prefer to be The King.
Joy,
Lynn