Give Me Your Questions And Silly Little Submissions Or Else

I'm thinking of maybe making a web extension for cohost that looks for a link to a css file in a user's sidebar info^! and automatically loads it on pages where that sidebar is visible, which would (for users of the extension) let you edit whole-page styling for your profile page (and anywhere else where the sidebar is visible e.g. comment pages for your posts) rather than just the subset that cohost allows inside your posts

Is this even a good idea? I've mostly lurked here but I've always loved what people do with their itch.io game pages and bringing something similar to here would be nice

! _{cohost doesn't strip empty links from profile sidebars so you can hide a link that's invisible to the user there}

...to the top of your timeline to see the menu sidebar?
Well, I've made a dead-simple CSS userstyle (it's only 1 line of CSS) that makes the sidebar follow you as you scroll down your timeline :)

The link is here: https://userstyles.world/style/10739/scrolling-sidebar-for-cohost

For use with Stylus (and probably any other CSS userstyle extensions, but I don't use those so ymmv)