I would love another Suramar-esque zone as well - the War campaign was definitely NOT anyway near to that. Unfortunately, I don't think we're going to get anything like that this time around.
Imagine though a mega zone, that combines the Nazjatar + mechagon sandbox, a Suramar-tier campaign, the danger of the Maw, and whatever this WQ 2.0 mechanic is. Likely not happening in SL though.