I'd love a round table, great idea!
I've had another thought, depending on when the conference is scheduled (and I would strongly suggest a Saturday), perhaps we should use the remainder of the day/weekend to have a hackathon. We could work on anything from fixing Nim compiler issues to writing `needed-libraries` from scratch. I'm happy to help/lead in organising this if there is interest. Maybe if it's a popular idea we can get some prizes for best project and have a vote for the winner(s) :)