What was lost? Aside from gaming, everything is now 64 bit so it sounds like a successful transition. And there is a lot more wrong with gaming on mac than 32 bit support.
Eh, I'm not saying it was a net terrible thing, but it wasn't just gaming; there's value in being able to run old software. Or maybe it's better to just go full virtualization at that point.
Clarus dates from the 24bit address space era, and we lost that a long time ago. But she transcends.