I have my old case obviously, and ASUS P9X79 which is ATX, meaning my case is ATX. I could re-use it but then what do I do with the components? I want to sell my old configuration for a couple hundred if possible. I saw it for that much at least on ebay
Looked more carefully, it sais it supports ATX after all. It only sais microATX for the blue model which is identical, but then in the pictures it mentions ATX again:
For the price I'ld say it's an awesome case
It looks slightly better ventilated than my current one (which can't even fit the wires which hang outside the case

I'm always keeping the case open, so it's only convenient to have it have fans, otherwise I could blow in it with a room fan and do it better
Only the HDD case looks weird, but I will not buy a HDD. I have an external USB one, and if I need to access the other from my old PC, I'll buy an external HDD case/rack with USB or whatever is called, if I really can't fit it in there. HDD's are for backup and very important work nowadays. If the SSD breaks while I'm gaming it's no biggie
To me a case keeps the pieces from spilling on my carpet for me to step on
Bonus: at one time I had a moth infestation. Not long after I found them all dead on top of my GTX 690 because of its heat

They were attracted by the light logo of the card

so it's not only an excellent room heater, but it also kills pests
I ran my old PC 10 years, and I haven't even re-installed the Windows 7 on it all along

I doubt I will upgrade anything in the next 5 years, and it will not be the CPU and RAM I'm pretty sure. I'm only getting this CPU because of its affinity with high speed RAM, otherwise by itself it doesn't make a big difference. My old CPU is fine still but can't work with DDR5, only DDR3 tops and that's where the problem is, not fast enough even if I can upgrade to 64GB. I also don't know what game could possibly make me upgrade my new PC. I'm only upgrading now because the performance is getting ridiculously low and on my nerves, even at lowest settings, on most games. Graphics bore me to death TBH, to me the game is the intelligent content. Witcher is such a bore fest, you play it to witness "awesome" graphics, while the content is garbage, no real challenge