OMG... this is THE A4 I was daydreaming of
just the sleek design of the original one and that extra mm to acomodate 120mm fans (wich means more room for GPU and taller CPU coolers also). The closer approach of what I wanted is the Mjölnir, but the price and availability put her off my possibilities.
The removable bottom panel is a very good feature but I just think, seing the gains on the original A4, that it would be recommended to perforate it before final production. I noticed by the central screw that bottom panel has an structural function too, so one could expect less perforation density or a central zone without it to ensure the toughness of the spine's case, but it's understandable. That paired with slightly taller feet: nothing crazy, just 5-8mm to ensure a smooth intake provided by the top fans pushing air out of the case and that would be it IMHO.
On the other hand we could also go one step further with the original A4 approach and enhance the bottom exhaust/intake. Acording to the video it seems nearly impossible to put any fan below the motherboard but maybe the PSU area would be fittable. I'm thinking about our good friend NF-A9x14 since the central pilar don't seems to let enough space up to the front to accomodate a 120mm fan. Maybe the gain would be so marginal that is not worth all the trouble... I'm just thinking aloud. What do you think?