I think emulating twitter was ha huge mistake for mastadon, the twitter reply structure that makes it difficult to have a long conversation with multiple people be the main part of the post but ideal for “dunks” and outrage farming. I think the Tumblr reblog structure would have been an infinitly better choice for the more actual socialising thing fediverse is going for and a small user base that isnt producing much content and it’s less image-centric allowing better use of sever space, additionally (intuitively I haven’t thought about implementation that hard) it seems like a natural fit for federation.