[Onslaught] : increased Energy cost to 10. Functionality changed to: "(5..20 seconds.) You attack and move 25% faster."
Okay, so pretty much a perma ias and speed buff, but still tame compared to radical skill buffs. I would suggest simply making it 33%.
[Vow of Strength] : functionality changed to: "(20 seconds.) Adds +5..35% damage to your attacks against foes not suffering from any conditions."
Pointless in PvP (which is where I assume anet intended this update to shake things up, and still less effective in PvE than before. In fact, if you look at other skills in the Earth Prayers line, you'll realize that you can hardly use another spell, such as: [aura of thorns] without loosing the effect.
If they planned on changing this skill (which was unneccessary), I would have suggested making it similar to this [shield of force]. It would sound something like: For 1...10 seconds, your next attack (notice attack skills are still OK) does +5...41% damage. And give it something like a 5 sec recharge.
[Zealous Vow] : increased Energy gained per hit to 1..7; decreased to -3 Energy degeneration.
Fair enough, makes this skill a little more appealing, but not by much.
Really though, I feel my main got shafted during this "monster update" that was designed to make unused skills somewhat usable. I'm quite disappointed at this, and have written anet a very nice letter about their bias' and that this much anticipated update has in retrospect, been of little importance to my dervish.
I've heard from ppl that buffing skills from a "strong class" would be pointless, but this update was meant to make unused skills useful. Instead of anet buffing dervish skills like [arcane zeal] and [pious renewal] which are only useful in VERY rare occassions, they buff what doesn't need to be buffed, at even more appaulling, they only buff 3 elites. Considering dervs are on the lower list with only 15 elites, we really don't need this kind of overlooking.