I'd be in favour of this being added to the High Level, or even Levelling Roulettes. As both are currently the setting to run for Law on a max level character as is, and ARF is something like 100 Laws as is.
But I sadly don't feel it'd fit in with the Main Scenario for one reason; Guildhests.
When you queue for the 8 man and a few of the 4 man Guildhests, it'll always favour the 4 mans first. And while I personally don't mind ARF (Still prefer to run this to others for Law on my alts), there are many out there whom are now accustomed to the speed runs of Prae, Cas and Cape.

@OP: It may sound like people are being a bit rude by suggesting that you find a new FC or use the PF, but they're really not. It's more a case that too many come to the forums to complain about something without trying all their avenues, and this is really frustrating to the regular forum goers. Especially when most try to offer helpful suggestions, and are shot down by the OP's saying things like "But I don't want to do it that way. I want to do it my way. So your way sucks!" in whatever format they choose to say it in.

In this thread alone, even though you didn't ask for it, you have two people willing to help you out. Which is awesome. I'd have offered to help were you on Excalibur. Next time you're having trouble getting a run for something, instead of coming to complain, perhaps come to the forums and ask. Cause as you've just been witness to... people WILL help.