Fair enough points - Room Correction for the Mini has been like the hokey cokeyI don't see why not.
After all, the room correction algorithm runs on your phone. Only the final EQ parameters get written to the WiiM.
Sure, the Mini may only be capable of 8 PEQ bands instead of 10, but making a second correction algorithm that only calculates 8 bands should be trivial.
If the automatic room correction is not added to the Mini, then it's because WiiM can't/won't allocate enough dev time to their entry level model or wants to keep automatic correction as a differentiating feature.
Not because of hardware constraints.