Team Nano FTW
It's a lot more exciting case and pretty much the only sensible direction as Dan already have cases for the bigger hardware. And while MQ5 quality might be better, but for sure it's a LOT heavier due to the thickness which reduces portability. Also here we have case fans on top. As for gpu's, I have my beloved 2060 at 170mm and I saw a 3060 Windforce model also from Gigabyte which is a dual slot card at 198mm in length and have two fans. Which sounds amazing and due to them also being 90mm fans, they are noctuarizable too. And the idea to have a tiny build where the cpu, gpu and case fans are all slim 92mm noctuas is a tempting one. Oh, btw EVGA also have 3060 and a Ti as well that are 202mm long I think (yet the fans are smaller there).
Anyway 210mm gpu length can also be attained without increasing the length of the case, but by increasing it's width instead. Having the gpu on one side with both the mobo + flex psu behind it, yet not like the Velka 5 where the psu meets the back of the gpu with it's 82mm side - here it would be the thinner 40mm side instead in a perpendicular fashion. This would not make the case longer, only wider, yet it would also add a lot more compatibility as now longer gpu's, taller RAM and cpu coolers could be used. So the mobo's 170mm and the 40mm of the height of flex psu perpendicularly would add up EXACTLY 210mm for the gpu on the other side! I don't know if you can imagine it based on this explanation
HDPlex GaN sounds nice, but I heard it actually heats up quite much during operation, while some 300w flex psu's can be quiet. And of course there is the Enhance 766b as well which is pretty much inaudible in my experience. Yet I can't help but think that APU users don't really have an available ITX case for them aside from the In Win Chopin and that has it's own (probably noisy) psu. So another APU only case would be welcome.