@Ertain Yeah power for bigger 3.5" drives is always the annoying part :(
I would like to see a couple more options for the Pi 5 that are sized to fit bigger drives (like the Penta SATA HAT, but for larger drives, and you could buy a cheap acrylic case for the setup... or even a cheap NAS case from AliExpress or something and insert the board as a true backplane.