If the crab apple was yours what would you do with it?
I think the plan i have now is to just keep cutting back the new growth but i may leave it slightly longer than cutting it back to just 1 or 2 set of leaves go create a fuller capopy. Any thoughts on that?
Well I've no idea what its branches look like, so it's difficult to say. You'd want it to look attractive without leaves. Maybe look at the structure and do a very systematic pruning, like is taught on elms. Back to 1-2 internodes, develop 2 branchs, prune back again, 4 branchs etc etc.. get rid of any branchs growing down, or up, or in to another branch. 2+ branches coming from same place, bar branchs.. general clean up and looking at each branch for its significance.
Unless you've done all that already?