If it's gonna end up as yet another NG system nobody will want it.
I don't think this is were it's headed though.Set goal was compatibility with old chipsets (as in recreated) and addition of fastest possible CPU and RTG.
That way you only increase number of (useful or not so much) applications.
As for Natami , what was the point of better Blitter anyway ? Was there gonna be a lot of new games written for it ? Better option was to add C2p (Akiko?) or just put FBlit in kickstart.
If you look at old Capcom System 1 games like Final Fight they actually use "slowness" of 68000 at some parts of game like when there is many enemies to give "slow motion" effect.I don't think that was bad coding and demos are made for specific hardware not for future compatibility.
Compatibility should be balanced between number of sw pieces that you "loose" to gain advantage.