Crossposting notices don’t seem to show up on posts or in communities with this update, although I can see it noted on the home screen list.

I’d definitely post more from there if the embed was as nice as e.g. using RES.

I like the idea of blocking until we have more granular filters. This instance will be more successful if it’s not blocked by loads of instances, and I reckon allowing stuff like this will make the block choice too easy.