So it's not as if they floated mana from their last turn onto the draw step.
It's just mana depletes betweens each step now instead of each phase I think.
I don't think I read anything about specific shenanigans regarding it pre-M10. Forcing people to manaburn was fun, lots of people were annoyed when they took it out. Oh well, not a huge change.
Proxyt- 95 Powpow Palaladin
AleithionP - 92 Knight of War
VerityP - 5x Super Service Novice