I think the market is ripe for a clean sheet canted valve, ball stud hemi, or whatever you want to call it. Symmetrical port layout would just utilize Hemi core cams. Valvetrain could easily barrow Chevy of Ford rockers stud mounted rockers.
For example, I just bought a set of Ford SR-71 heads for my jet boat. These heads are insanely nice The castings are fast as-cast with Intake port flow over 400 CFM and would probably benefit very little from porting and the pricing was way more reasonable than any chevy or mopar head. I paid $2900 for a pair of heads with valves ,no spring package. When I look at this head, the architecture just looks like it could easily be adapted to a RB block.

AG.