o__o That’s insane. It sounds interesting, but truly with the addition of the CRZ ability and adding people to raid cross-realm, I didn’t think it was that big of a deal to just do that? But now making it so that you can change the raid’s composition itself to compensate for lack of members so that it’s easy for a smaller group seems a bit pointless.
Blizzard has prevented the use of cross-realm grouping for current-tier normals/heroics. The reason I always hear is because it would destroy guilds (no idea if that’s true.)