It looks good, and could actually make sense, the Exeo sold much better than expected here in it's home market (don't know about rest of Europe). Changing the length and deleting the hatch means that it wouldn't overlap that much with the Superb. Besides, VAG couldn't care less about overlapping products. So, why not? Brilliant idea mate.
Slightly shortened wheelbase (between front wheel and door to receive more likely FWD proportions) and rear overhang.
SEAT side detailling and front / rear taken from the 20V20 concept, as well as its third side window.