Like the Kuvael, Graxx, Corpra and other themed collections, I think a cool theme for a collection would be space outlaws/cowboys/western stuff. I love Mesa to bits but it's sad that she's the only frame that remotely has that kind of feel about her. I think it would be pretty dang awesome to see a full collection themed around that. We've already got plenty of revolvers and lever actions, bows and whips and such anyways that'd fit perfectly to compliment this collection.

And thinking about that, I'm now imagining folks making a clan of space outlaws, all using stuff from this theoretical collection, with their own little alterations and niches for their unique personalities and coming out looking something like a warframe-ified Van Der Linde gang. Or, heck, going the Star Wars outlaws way and having a bunch of Cad Bane style gunslingers.

I sadly don't have the knowledge, tools, etc. to do this myself, but if someone feels inspired and wants to take and use this idea, go right ahead! I'd buy your work in a heartbeat for every frame I own, you'd have yourself a reliable repeat customer.