Big +1, if only to stop all these people currently breaking the rules by putting raffles and other things in the trade listing and clogging up tags :(
I know TH is a character storage site, but there are some "characters" that definitely aren't, for example profile coding templates and masterlist entries. I feel like it would be a good idea to have maybe a box you can uncheck or a drop-down menu in the character select screen for when you're uploading these non-characters? And then maybe they won't turn up in the browse list, and possibly some other limitations idk.
In a different but related vein, some people rp on toyhouse, and some of those rp in fandom worlds. I feel like it'd be convenient to be able to add limited characters, possibly directly and specifically to the world, for when you're rp-ing as a canon character? And also just to add NPCs to the world that you wanna post as but don't want to make an entire new character for, like shopkeepers & etc. And those definitely shouldn't show up on the browse lists. Currently I've been doing this by posting as myself and just adding the character name on top of the post, but it's kinda . . . comparatively untidy :/
So yeah! Character streamlining for the first one, and extra world functionality for the second one!
Definitely +1 for the first one! Not too sure about the second one, but I wouldn't say that I'm fully against the idea.