And that's where I have to disagree with you. The Prodigy, and pretty much most Mini ITX cases out there, are just far too big. Intelligent use of space is much more important, and frankly the Prodigy is very poor.
If you're not using a lot of hard drives then the entire front of the Prodigy is just wasted space. If you're using an AIO water unit then there's cavernous amounts of space above the motherboard and the roof. Yes it's great to see a full customer water loop in a Prodigy filling up the space, but that's not really what it was designed for.
Other cases are just as bad - full ATX power supplies in cases that aren't quite long enough to fit GPUs that would need that much power, cases that support full-length GPUs and PSUs to match but are double the volume to compensate for non-blower coolers and 240mm AIOs, it's all silly.
Think logically and space things intelligently. The Silverstone Sugo SG05 is literally 2 inches length and 1 inch height away from perfection, and is smaller than a showbox. Digital Storm Bolt and Falcon Northwest Tiki, albeit bespoke cases, are perfect examples of how to lay a full-power Mini ITX rig out. Silverstone Raven RVZ01 and NCase also do it right.
So yeah, maybe the Prodigy is smaller than other Mini ITX cases on the market, but given the point of comparison is ridiculously oversized to begin with, it kinda makes the whole point moot.