Just making 2 off the cuff remarks, an observation and a reference. Anyone asked where the dev community’s communication went to, can let a broad beaming smile come to their face, svivel their eyes skywards, then make a broad gesture with their arms, and exclaim solemnly “To the fediverse, my friend. To the fediverse”. And the dotted clouds high above in the steel blue sky will smile back at them, wave and gesture, and sing melodiously “Here we are, come join us”. And so they do. It is a sight to behold.
Or with a tad less sarcasm, you might also say: Even though it is a medium that is not up to the task of holding a grassroots open-standards based ecosystem together, microblogging has become the preferred channel for communication in the app-centric fediverse.
There’s a big uptick of interest in C2S and I am keeping track of that in an open issue (for the time being). EU’s NGI0 funding is currently stimulating this new opportunity to get on a more standards-based track and a future fediverse that is not purely app-centric on the basis of post-facto interoperability, and whack-a-mole maintenance to deal with continual protocol decay that is thus being introduced all the time. In particular these two projects are relevant: The NLnet-funded (via NGI0 Commons) Event Federation initiative, and the W3C SocialCG ActivityPub API task force.
I’d say most importantly seek alignment to the Event Federation initiative first, and then apply that to any ActivityPub implementation, to whatever Specification profile you have chosen to adopt.