SaaS idea: "paper reading club", kinda like a book club, but for technical papers.

Like a https://paperswelove.org/ or are you thinking something different?

I was thinking of a service that provides what you need to run your group. 30% meetup - discovery, registration, calendar 30% discussion forum 30% archive of papers and talks I am also thinking that groups don't need to be geo-located, and can be based on topics of interest and meet virtually.