Ok, here's my attempt at bringing back enchantment spam. It's a tall order (since the problem is so complex), so naturally it's a long suggestion involving many changes.
First off, mysticism:
For each rank of mysticism, enchantments you cast cost 6% less energy.
Similar to expertise, but stronger since it only affects enchantments. Note that ideally, a dervish is supposed to be a melee caster, so they'll be splittng attribute points between scythe mastery, mysticism, and one other attribute. And even so, dervishes trying to make use of this will not be swimming in energy (mainly due to the cost of enchantment removal skills).
Now, for PBAoEs to be considered viable, there has to be a reason to use them instead of the alternatives. The standard against which melee AoE can be judged is MSDB (which is capable of 40 armor-ignoring AoE dps). Since MSDB's primary target damage is even greater than it's AoE damage, PBAoEs have to be at least slightly more powerful against AoE targets or else there's simply no point in using them.
Heart of Holy Flame
Grenth's Fingers
Staggering Force
Dust Cloak
Grenth's Aura
Each of these skills will be changed as such: 10 energy cost, 1/2 sec activation, 10 sec recharge, utility effects (blindness, damage conversion, etc) will occur on activation, damage from the AoE will occur on end.
Making the damage occur at the end will encourage stripping. Quicker activation will increase dps.
Zealous Renewal and Balthazar's Rage
Damage will be dealt on ending, and you gain health/energy immediately on hit (rather than all at once when the enchantment ends)
There are caps on the effective energy or health you can gain from these two enchantments (your max energy and health, respectively), limiting their usefulness. Furthermore, they don't give you the energy or health when you need it. This changes that.
Mirage Cloak
recharge becomes 2 sec, energy cost becomes 10, activation time becomes 1/2 sec
Signet of Pious Light and Signet of Pious Restraint
Enchantment Removal effect changed to decrease recharge time by half (instead of instantly recharging skill)
Eremite's Zeal
1/2 sec activation, 6 sec recharge
Nerfing of these three enchantment removal skills may seem counterproductive, but if PBAoE is to be the dervish's specialty, and there are great enchantment stripping skills that don't involve the scythe, then dervishes will simply drop the scythe and bring a staff, becoming pure casters instead of melee casters.
Mystic Sandstorm
Now only removes 1 enchantment, and deals 30...106 earth damage to all nearby foes if one is removed.
Extend Enchantments
Now only removes 1 enchantment on end.
These would be changed because there could be potential balance issues when deep self-enchantment-stripping is combined with the new PBAoEs that all deal damage on end (huge potential spikes possible there).
Contemplation of Purity, Release Enchantments, and Ether Prodigy
Now only removes non-dervish enchantments
"WTF?! These aren't even Dervish skills!"
No, they're not, but currently, they can be used for deep self-enchantment stripping, which under my suggestion could be a problem for the same reasons as Mystic Sandstorm and Extend Enchantments. So, changing them so they don't strip dervish enchantments should fix that. Players using those skills the way Anet intended would notice no change. And in fact, this change could even open new doors build-wise for Monks and Elementalists (since the earth prayers line has so many defensive enchantments, you would now be able to use those enchantment removers without being forced to sacrifice defensive enchantments).
Pious Assault
5 energy, 1/2 activation, 12 recharge
Scythe Attack. Deals +1...26 damage. Removes 1 enchantment. Removal effect: instant recharge
Irresistible Sweep
5 energy, 1/2 activation, 3 recharge
Scythe Attack. Removes 1 enchantment. Removal effect: all adjacent enemies take 15...51 holy damage.
Twin Moon Sweep
1/2 activation, 3 recharge
Lyssa's Assault
5 energy, 1/2 activation, 6 recharge
Scythe Attack. Removes 1 enchantment. Removal effect: gain 4...10 energy.
The faster your enchantment removal skills are, the higher your dps, so each of these get 1/2 sec activations. Each one has certain advantages over the others, and PA can be used while the more powerful ones recharge.
Pious Renewal
Energy gain increased to 0...4
Because the builds that would result from this will need a lot of energy management
Ok, so what would all this do?
Well, most of the PBAoEs will deal about 60 damage (which in HM would be reduced to around 30) and have 1/2 sec activation. A dervish with 12 scythe mastery (I'm assuming a spread of 10+1+1 Scythe, 10+1 Earth or Wind, and 11+1 Mysticism) and AoHM will do 36.73 damage per hit against a 100 AL opponent.
So, with a 1/2 sec activation PBAoE and a 2 sec enchantment removal scythe attack, the dervish would have about 66 dps against the 3 opponents in scythe reach and 30 dps against other targets. In some cases, this would beat MSDB, but not in others (depending on how many opponents there were and how many were in scythe reach). However, there would also be the occasional Holy AoE mixed in (such as from Heart of Holy Flame or Irrestible Sweep) that would add some more damage. This, plus the various utilities of the PBAoE enchantments would make the dervish very desirable as a melee AoE user.
The main weakness that would arise from all this would inevitably be energy. Even with very high mysticism, the sheer speed at which PBAoEs (or, more importantly, the enchantment removal skills, which would end up being the majority of the energy sink) are being spammed could quickly drain a dervish's energy in only a few seconds. Therefore, energy management such as Attacker's Insight, Zealous Renewal (which would now be a decent skill), Lyssa's Assault, or Pious Renewal would be necessary. Plus, since most of the PBAoEs would still have long recharges (Mirage Cloak being the exception, but even it would have a 2 sec downtime), it would be necessary to bring multiple PBAoEs. In other words, like spirit spam, it would take a lot of skill slots to really take advantage of all this.
So, that's it. Feel free to suggest improvements, point out flaws, or just tell me how the whole idea sucks and I should be burned at the stake.
