Aren’t Legendaries power rewards? Also, if it’s a waste of time for YOU specifically, that’s fine. Go play the 6 block cell runs that get you your Weekly LEgo Material cap. ANd then go raid and Mythic+. Also, fun is subjective. Just because you don’t find it fun or rewarding enough, doesn’t mean others don’t.
Also, if Torghast were to provide Gear on par with Mythic+ or Raiding gear, the community would riot. Because at that point, Torghast is basically required content, which no one really likes. It’s already required now, but it’s not a chore, as at some point in the week, you’ll hit the cap and say “Torghast is done this week”.
Also, this is definitely not catering to “casuals” Casuals will be more or les doing the 6 blockcell runs and not do it for a while after that. The people who are gonna grab the high high rewards on the infinite torghast mode are the progressors, or the achievers, mount collectors, etc.
I don’t see how it’s a questionable system. It has something for everyone.
Don’t wanna play torghast for that much and only care about Raiding/M+? Ok, hit the cap for the week on your 6 block cell runs and be done with it.
Wanna play Torghast because you want to? Ok, Twisting corridors is there for some cosmetic rewards and bragging rights mounts/pets/transmogs/etc.