Obviously, this is just an initial reaction.
I'm surprised at how little damage the gunner deals. I expected the low HP for this player, but only as a trade off for dealing a significant amount of damage. I realize you don't want an AoE class dealing insane amounts of damage, but I've having trouble finishing out a single target with a Gunner. Even with the assistance of a Supercharge or The Pulverizer, I can't take anything down in five action points. I think their low damage, coupled with their limited move/firing range makes them cannon fodder.
What do you guys think about this class so far?