What I would like to see is something smooth and rolly.
Something where the transition phases are stretched out so that the ball doesn't go so quickly from skid to hook, and hook to roll.
For me, many modern balls tend to transition "all at once", so to speak, especially balls with high diffs, which tends to make them hard to read, predict, and adjust to.
A nice solid aggressive cover, with low to mid RG's, and a Diff in the .20-.25 range could be nice. And make it symmetric too, or at least a VERY weak asymmetric ( below.O5 )
I mean, most of us do a lot of THS bowling, and you don't need .060 diff with .18 MB strength on a top hat, do you?