There are only 2 evil DGs... UB and Erobus!
Torch is evil only when in fire mode (actualy he is not evil hes just crazy....)

All the others are good...
Sedna is a healer, Oak is a paladin, QoT is.. nature thingy...
Regulus is somewhat good (he got angelic wings)
and Rook is, hard to say he is the only none living DG, lets say natural..

So we got 2 evil and 4 good with 2 nutral, shame if you want a game of pure Evil vs Good
like light force play only good DGs and dark force plays only evil DGs...

I thik they should of make 2 evil assasins and 2 evil generals
vs 2 good assasins and 2 good generals

For excample they could of change torch into Demon and to make Rook more gothic style (like in WH2000)
thats as for assasins...
while QoT could of be something like a Necromancer with undead movieng her around with dark dead vains...

Anyways i think by doing so they could of add a singel player campaign of good vs evil battles
and after you win a good campaign you would of see a short movie of a world full of good
while if you won evil campaign you would of see video of people suffer and all the world is covered with fire...