I got this idea as I was looking for the new feed and read achievements (e.g. Dental Nightmare, Sugar High) under the Morostide category. Right now, they're under the Pets category, and of course, that makes a lot of sense. Same goes for the stickers/plushie/beanbags (e.g. Expressive Pumpkins, What a Good Familiar) and rag dolls achievements that are right now under Collections and Wardrobe.

However, since they specifically ask for ToT and Pumpkin Patch items, I think it would be good to also have them under Morostide. This way, you can easily see all the achievements for, say, specific sets of stickers or plushies, and also what sets of Morostide items you need for Morostide achievements. So I'm just throwing this out there; would this be useful to anyone else?

I don't support this idea. This makes good librarian information retreieval sense, but you're supposing that SubetaTeam does a better job of marking Achievements as Retired than they are. If a whole bunch of actually achievable achieveables go under seasonal where many are not still acheiveable, it'll piss more users off than be helpful, IMO.

I'm also of the opinion that if you can get an Achievement outside of the season (pumpkin deleter is one of those) it's not really a seasonal achievement and should be excluded from that category.