I really couldn't decide what I wanted to do, even after browsing the rich inspiration thread in this group build.
I stumbled upon the AvPro Marauder concept and it really fits the bill, here are a couple pictures of it.


I don't know much about AvPro, from what I've read online they were anything from a think tank to a bunch of charlatans, but I think this concept is pretty cool. It looks slightly different in each painting so mine will be a amalgam of what I like best, hopefully similar to the AEW&C one above, but without the radome.
I'd love to do a diorama like that first image, with the Marauder dropping off a group of special forces. This is going to be entirely scratch built, so to be honest I'll be happy just to finish!