Yeah, the Archer, Peregan, really sucks. He does not seem to have any effective AoE-skills that is worth using compared to the other heroes. I have not played him since beta 3.
Keplin the Mage also needs some buffing in the form of some AoE-skills - either some damage or support (heal etc.). Maybe an innate Ball of Power (aka Fireball with magic).
The tyrant hero, Naphaz, also lacks something after his Dark Spread has been nerfed. Now (in beta 4) you can only use Dark Spread every 5 rounds. Unfortunately that sucks because either you do not survive that long or the battle is already over due to your other main units.
At least with Tandis, Varda and Drogon you have fair chance of surviving and dealing damage. I just want Varda to change the charge she has with something better in the form of wide charge e.g. charge with 2x8 area of effect.
