I believe that Paragon specifically carried an enhance shaman through Mythic because of how imbalanced Fire Nova is on Imperator. I currently play enhance, not at a super high level, but on fights with lots of cleave, we're usually at or near the top. On single target or 2x target like Twins or Butcher, however, we're definitely hurting. I've read that elemental's single target on fights like Butcher is pretty good, so between the two, the class can hold its own imo. As an example, I'm 650 right now and on large multi trash packs that are tightly grouped I'm usually between 30k and 45k, but single target like Butcher, I'm struggling to break 20k. My secondary stat allocations aren't great, so the numbers could definitely be better. The main issues that I've read about are that we really don't scale well with gear. The relative power increase enhance picks up from 650-670 is far less than most other classes.