Not sure what kind of discussion you're wanting to see, but I feel like a lot of current discussion that would be considered non-left-biased is over things like "do trans people deserve to exist?" and I don't think those are discussions worth having.

Thanks, I've seen Alovoa! Is it federated though? I couldn't find anything about that. I feel like having different instances you could join would add a lot, e.g. you could be on an instance for specific hobbies, identities, etc.

These are great things to think about, thank you! It definitely feels like it would be a big undertaking if it did happen, and starting small seems like the right move.