you had me at 'sorting sim.' the 64 cap plus extra rebirth slots reads like a pretty standard mobile move: make collections bigger, then add friction so you feel the need to organise constantly. i do think the Star Upgrade idea is healthier than instantly dumping dupes, though, because at least there is a reason to keep a copy around instead of treating every duplicate like pocket lint. the real test is whether the higher-star Brainrots feel meaningfully better or just more stuff to stare at.