What do you want to do that requires admin rights? And what are your plans for the wiki? You say in your request that you want them because it shouldn't be abandoned, but aside from the fact that it hasn't been abandoned, that does not explain what you want to do with the rights.
I don't see that you need to adopt the wiki for any of that, given that I am active and have rights myself. I disagree strongly with that name change in any case. But I'm happy to discuss updates to the navigation and can make any we agree on.
Likewise, if you have ideas for updating the appearance then I'd be happy to see them. I'd considered asking JoePlay to design something new, but hadn't gotten around to it; I agree that the current design is a bit dull.
As for bringing more editors, that is a pleasant idea but has nothing at all to do with being an admin.