Just in case anyone is using their account here to post to off-instance communities: those posts and comments seem to have a very high failure rate. There is a lot of activity and accounts on this instance. This is to raise awareness, not to pull people away or break up the lemmyverse. Quite the opposite really: there is a technical problem on this instance that might be preventing the lemmyverse from functioning as it should.
Yes, this would be a change to the underlying protocol. I think it’s definitely worth discussing how this problem can be solved by people who maintain ActivityPub. IMHO the Lemmy and kbin developers should also be a part of these discussions as well.