Well, that wrongly attached radiator in my BeQuiet case was itching me so much, plus the temps with the 240 AiO were not so much pleasing, I wanted a 360 AiO.
And I still needed a Case with ODD option.
So I ended my search with
https://de.thermaltake.com/core-x31-tempered-glass-edition.html
I would have gone with a metal side option, but there is none
If you have the ODD in the lower tray, you can remove the upper tray and have a 360 AiO with Push-Pull Fans exhausting at the top.
Since the case is quite wide and the Radiator is really near the glass door, there is plenty of space between it and the mainboard.
So you can have huge VRM heatsinks or RAM heatsinks no problem.
And it also has room for a 200mm fan in the front
Unfortunately I ordered an Arctic Liquid Freezer 2 360, whose pump mount interferes with the VRM heatsinks of the Strix Z690 (learned about that later trying to figure out, why the machine wasn't booting)
Will send it back today, ordering a Thermaltake 360AiO, I read some good reviews and it's not burning a hole in my wallet.
If all is finished I'll try to make some pictures ... although it looks pretty patchworked due to the color of some fans