Please release nest Normal and Savage raids at the same time.

[StrejdaTom]

That may have to do more with the Raids themselves and the fact that they require heavy scheduling formatting. It seems people got a taste of what casually raiding is like, and prefer it to hardcore raiding.

I don't know but most reasons I hear from people (they have usually done coil in 2.X) are "the fight is too boring" or "this is nothing like coil, coil felt new".
For me personally the finding people all the time is worse than the whole fight.