I’d like to add into this!
I personally stay very active on reddit, for mutliple subreddits (you can find me as u/Silevence) and I find it to be pretty barren, but I think it could have a good deal of potential.
One of the features I enjoyed about Google Groups (Though overall I wasn’t a fan of the service itself) was the email overview feature it had, so that’s something for consideration as well.
Another key point is often times I find myself working on spare TW projects at work during slower or just down times, but with restricted access, sites like Twitter are inaccessible, for obvious, if not understandable reasons, of course.
Overall, I think using GG was a good starting ground, but it felt dated and a little cluttered with navigation and finding useful information, but with this current site, I think it has a good deal of potential, maybe more so than the other Social Media platforms, but that’s just my two cents in the matter!