I don't think non-standard play is dead completely - we get different amounts of charges for the new gauge depending on the spell used so I think the focus of nonstandard will shift to manipulating how you fill that gauge to get access to the new nuke. I would have preferred if we could regain mana with any gcd in UI personally. I'm only really concerned by the complete lack of any mana regen for any type of downtime we might encounter. That's gonna make everything from overworld mobs to high end raid phase transitions etc a nightmare -_-