I can't say I'd take the ~500 extra Hurricane damage over the amazing protection you get from Cyclone Armor, but I guess we just disagree there.
That 30 extra energy gave you a whopping 60 extra mana. That really doesn't ease much of anything, especially considering it could have been anywhere between ~120 and ~180 life after Oak. The "spamming tornados" argument doesn't really hold up either because: 1) Druids have the worst cast rates in the game, and 2) Tornado has pretty much the lowest mana cost of any primary spam skill in the game. If you advocate investing in energy on a Wind Druid, then you must also advocate investing in energy for Trappers, P&B Necros, and just about every Sorc build there is.
EDIT: OK fine, second worst next to Amazons, but Amazons don't generally spam spells. :tongue: