Hey again @blanklob, hope you’re having a great day!
Really good idea for sure, thanks for flagging this. For extensions right now, you’re right that links only work inside a block to an action on the same resource page, not from the app itself. I’ll get this sent up to the product team as a feature request. I can’t guarantee anything on my end here in terms of if this will be released as a feature, but just wanted to touch base with you to let you know I’ve logged this officially