There's a lot here I'd not considered so this is helpful, thanks.

The splintering is an issue I've run into already. When I searched for squaredcircle on the assumption the subreddit community had started moving, I got results for five 'squaredcircle' communities across five different instances and none of them have a significant membership. I don't want to further splinter the community by creating another community as you say, so I figured I'd just have to subscribe to all of them and wait to see which one takes off. I guess it's going to be down to the subreddit mods to say "this is where we're going", if that's even what they want to do. Until then it might be a bit daunting for those making the jump but it is what it is.

Thanks. I'll x-post it shortly.

Indeed. I do feel slightly bad for jumping on lemmy.world and adding to the problem when it definitely isn't the best one for me! I'll probably move to a UK instance at some point. On apps, wefwef is a god send. Apollo is legitimately what I missed most after moving back from iOS to Android, so to be able to use an Apollo-like again is amazing. To see some of the third party Reddit devs making apps for Lemmy is exciting and I think bodes well for the future of the platform.

Thanks. The increased load of a major sub migrating and needing to work with the instance owner somehow isn't something I'd considered. It seems I did a whole of of thinking about this without really thinking about anything!