Of course they won't add anything, and if they add no one is going to implement.
Mastodon, Pleroma et al. are not really ActivityPub implementations. Each of the fediverse clients implement some random 10% of AP and just try to get compatible with each other using dirty hacks.
Mastodon, Pleroma et al. are not really ActivityPub implementations. Each of the fediverse clients implement some random 10% of AP and just try to get compatible with each other using dirty hacks.