Solmyr, Demeer, and Aislin are cheaters (and/or) kamikazes; do the rest have a right to exist?

Dungeon has an excellent Gunnar and 2 good ranged stacks – why wouldn't you play it! :) And no one is immune to a poor starting position; I don't understand why Shakthi is being brought into this.
As an alternative to a ban, you could simply reduce the size of the incoming stacks of Trolls, but that's a slightly different story.