Assuming you mean "that could actually be manufactured by current technology, but not necessarily in a cost effective manner and keep the current form factor" I'd go with:
Make it slightly larger, not because I want a larger screen, but because I want an extra column of keys on the right side of the keyboard. For me, a keyboard without standalone home/end/ins/del/PgDn/PgUp is really only usable for casual web surfing. Just not having them in the normal positions will be enough hassle, having to hit special combo key combinations will just make it worse.
Find a way to put the TB3/USB-C connectors on one of the short edges instead of long edges, so that we don't have cables dangling off the top of the tablet, OR either expand the POGO connector in some backwards compatible way or put a docking port on there.
Honestly, I'll be using my Eve V as a tablet when I'm away from my desk. When I'm anywhere where it won't be in my lap, I'll probably be hooking it up to power and a real keyboard. So yes, my priorities aren't exactly like most people's, I'm more interested in how well I can dock it