I know you're not - and I really do get the idea.
When I started the 'new' SOTM I gave a lot of thought to how frames would be submitted - and to create a fair as possible platform. TBH I don't think splitting up anything would be needed. And keeping the approach totally open allows for pushing technology as well as crafting.
There isn't much difference between say 3D print and CNC IMO - but somehow CNC has more cache... But logically thinking it shouldn't - both are tech driven - both have wildly different outcomes.
Don't get me wrong I love a gnarly natty just as much as a 3d printed frame - and covet cored super frames with a lust which is unnatrual (pun).
So I'll keep allowing all mediums - and expect a level which is worthy of consideration