Coming from Notion here! Definitely miss how powerful their '@' feature was - especially the block sync feature (which is similar.)

Big upvote for this as well. @mentioning is a great feature of ClickUp, but seems not complete without the ability to @mention more freely, to not just Lists but things like all types of Views, which at times can be relevant discussion points in meetings, etc.

I just posted the request in fact over here to @mention all ClickUp entities...

Yes this is key. Often you want to talk about a list, not just a task. I'd add that Goals should also be available. If you are using Goals for projects, lists for say features of a website, it is very useful to be able to refer to these items within ClickUp!