I Apologize in advance for the wall of text. Although there is an inescapably large workload, and over-abundance of trolling and general annoyance over this subject, I still felt as though I should make this post.
To toggle or not to toggle that is the question:
Transformation should definitely NOT become a toggle, that being said, it could be greatly improved upon simply making it require a certain amount of ultimate be generated before it could be used, then DRAINING ultimate at adjustable rates. This way, devour could be repurposed to generate finesse/ult points (still doing its job) and Alpha wolves could buff berserkers' durations *and their own while 2 berserkers are nearby) by decreasing the rates at which ultimate decays.
For example, transform requires 700 ultimate before a transformation can occur, it costs 100 to activate, then decreases ultimate pool by 10 ult/s giving you a baseline timer of one minute. Devouring a corpse could generate 120 ultimate (12 extra seconds) plus your regular generation. Each time you devour, you get a stack of "Gorged" gorged stacks up to 5 times, and it takes about 20 seconds to lose 1 stack of this debuff. After the 2 minutes, the ultimate cost starts to go up, by 5/s every 30 seconds until it runs out, with each stack of gorged reducing the cost by 1 ult/s. Also, we should get the ability to pull ourselves OUT of the transformation early, while keeping the ultimate pool remaining.
This puts a standard limit of 2 minutes onto the transformation. Here is where the pack gets its real benefits, Alpha werewolves get an aura that reduces the ultimate pool drain of an activated transformation, they would also benefit from this reduction when with 2 berserker werewolves. This way, if you have a pack of 3 werewolves together, you all get a standard transformation of 2 minutes, extendable by 2 more minutes for a total of 4 minutes before maintaining the transformation becomes extremely difficult (the cost increases until it cannot be maintained).
Alpha Werewolf-unique passive 20% chance to reflect attacks at 1/2 damage, every 5 points of stamina spent heals for 1 point.
Berserker-unique passive; In berserker transform you have a 20% chance to dodge attacks and can stealth. Sprinting does not break or effect stealth.
Skills; The current skills are great, these additional abilities would not be augmentable or on the skill tree, but only present during the transformation.
1. Unstoppable (passive); 25% reduced damage from aoe attacks, and 50% reduced CC; increased to 50% reduced damage from AOE and 100% reduced CC effectiveness while sprinting. While sprinting or Pouncing in your WW transform your immune to slows/snares, and roots, and all stuns reduced to 0.5 sec. Each spell resisted costs 1/5 its value of WW mana pool, disabled when out of mana.
2. Bite; You tear at your enemies flesh; a random injury occurs with different penalties on target; arm -> disarm for 2 sec; leg -> slow 50% for 2 sec; Torso -> 20% reduced armor and healing received; head -> 2 sec stun. "Go for the throat" (2.5% chance vs target under 50% health) executes the target.
3. Maul; a combination attack of 2 light swipes and a heavy attack, 50% chance to knock target to the ground/interrupts casting.
4. Call of the Hunt (Alpha only); (2.5s cast) calls 2 lesser werewolves to fight for you for 30 seconds (generates 150 ultimate (15 second longer transformation) Lesser werewolves have 25% health and deal 25% of the damage of the Alpha.
5. Feeding Frenzy (Berserker only); channelled (5 seconds) disables the target, berserker jumps on them and forces them to the ground, dealing 10% of max stamina as damage per second, half the damage is dealt afterwards as bleed damage over an additional 5 seconds.
With these changes; WW transformation timer is slightly lengthened, Werewolves can be useful in PVP, while still being vulnerable to ranged direct damage, casts, poison damage and the fighters guild abilities. I don't think anyone will think these suggestions are overpowered.
Keep in mind; bite and maul could be the starting werewolf skills, pounce and roar would each need a skill point to be unlocked, (level 3 ww roar/howl level 5 ww pounce) and the last skill you would only get when you chose to be either an alpha or a berserker (Change to ww level 10).