Lets talk about what you want to see in a Gen III aftermarket Block?
Not a new block feature but something that would compliment your new block and be very useful for us folks swapping factory gen3s into our old cars is a simplified front cover. Just race car/hot rod accessories; small alternator mount in a convenient location and provisions for a readily available OTS elec water pump.
Also…alum valve covers with provisions for popular coil packs like the IGN1As. And finally, how bout reproducing or improving on that popular 6.1 alum intake?
On the new block, my vote is for aluminum.