Intriguing proposal. Personally, I'm more interested in features than in the underlying technology, so a project that aims to rebuild everything from scratch with a new tech stack would appeal to me only if it was the basis for a major leap in functionality. Do you have any thoughts on that?
we should move the code to GitHub or GitLab, there appears to be a JForum organization on GitHub already. The reason behind this is because git is easier to work with and both have an issue tracker that we can make use of.
git would be nice, but so far it hasn't been important enough for anyone on the team to tackle. SF has an issue tracker as well, by the way (which is being used). The JForum 2 and 3 stuff on Github is obsolete; it's there merely for historical interest.
perhaps we should move the forums to the jforum.net domain? That could be a good idea, and we could also setup some type of extensions site: ex community.jforum.net and extensions.jforum.net
We do not have control of the jforum.net domain at this point. That might happen in the future, though.
Overall I have to say this is a major undertaking - so I'm curious who the "we" is you're talking about. Is it mainly you wanting to get involved, or are there other folks?