Warrior ability is too weak, it could be good with expert card but not with basic ones, and i can assure you a lot of people will stop play Hearthstone at released when they ll understand that Warrior ability and basic warrior ability are way too much below other class.
Warrior only get 2 armor ! and the same turn he lost it most of the time, no Offense like druid, Spell Power doesn t affect our spells cards, IMO that s not intended.
When Warrior get Frost he cannot attack other Hero, but Firebal and Hunter Ability and Even when they are Frost, including Rogue.
Just frost Warrior and the warrior is dead !