There's already an aerial film group and a double-X (5222) group but it excludes the aero double-X. Plenty of other film-specific groups out there for sharing techniques/results, just not for 2405 yet.

In other news, I now have a 70mm back attached to my RZ and have made a couple of 2405 tests by taping it into 4x5 holders & developing in a 3010. Now I just need one more cartridge to turn up in the post and I'll be able to actually shoot some properly.