In my opinion, unless Admin can show significant interest in the forum, then the forum will not grow (or will, indeed, die).
What are the benefits, to members, of "migrating" to another provider, or "rebranding"? Why can't Admin state the benefits (to members) of doing so? How hard is that?
I agree that a number of
competent moderators are required. As getonthegarabi suggests, moderating means much more than just deleting spam or deleting personally insulting comments. However, moderators also need the full support of the owner/administrator (and that has never been forthcoming).
Also, moderators should not be selected by some sort of "Halo effect", as some seem so often to suggest. They should be selected against agreed criteria (which I have posted before...I can't be arsed to find it now...but which has been largely ignored).
Admin has recently moved some threads that were posted in the wrong places. I haven't seen that done for months and months (if not years). The place is a train wreck (structurally wise). You can't believe how galling it feels to someone who tried very hard to keep the place ship shape and tidy (for the benefit of the members) and got criticised for doing so. Then see the structure of the forum turn into a train wreck. Hell, Admin even posted THIS thread in the wrong place!

The structure needs revamping (to make it easier and more logical for members to use), and it has needed revamping for months and months (if not years).
The forum is not, and should not, be simply about revenue raising (e.g. adverts and sponsorships) though I understand and accept that someone has to pay for the running of the forum.
To be honest, if someone sets up another forum, with an appropriate level of integrity, passion and support, I will also be out of here. Or, anyway, I will be out of here, irrespectively....("Thank God!", you cry! :

).
Anyhow, good luck with the "migration" (whatever benefits that may bring).
My opinion only.