Ok so it seems ROH will be going on for the foreseeable future. Best case scenario, they get the tv/streaming deal necessary to upload the video library, and enough tv/youtube time that it will disappear from AEW tv all together and go do its own thing, but I wouldn't be against it becoming AEW's farm system/nxt equivalent. That's a different conversation all together.
Having said that, is there an AEW mainstay that you can just do away with all together and ship off to ROH to improve. Maybe they stay there, maybe they completely reinvent themselves and come back after a long period and knock it out of the park, who knows.
My votes are Fuego Del Sol, who I'm sure can produce, but he's completely in the shadow of a lot of talent around the same age in AEW.
2nd choice would be The Factory. Nothing against QT but I really have no interest in anything above seeing his stable get squashed on Dark. Hell, they could return in a few years stronger and more interesting than ever.
I think that if the mythical ROH deal does come to pass, it would be the perfect place for younger projects like Lee Johnson, Brock Anderson, Lee Moriarty, Dante Martin, etc. Hook in particular. Just guys who desperately need regular reps and aren't getting enough time to develop as it is. Basically the AEW version of NXT.