ernest, I like this project cause you've been so responsive and enthusiastic.
I don't like microblogging. The only good application for it is for discovery without advanced search. I'd prefer the focus to be on well written articles, engaging podcasts, and video documentaries. What's that called macroblogging? Monetization, haha? We gotta give people an incentive to produce thoughtful content. I'd recommend integrating with LBRY. That could be another NLnet project: ActivityPub to LBRY bridge.
The microblogging aspect could be automated with a summarizer, and autoposted.
This would be an awesome service for me, I'd pay $5/mo to have it.