Like the idea, not the card. The Zealot is the strongest hitter out of all basic units, not just the best armored. I can't help but feel that it should be 2 power.
As much as the zealot has the highest dps per dollar of any protoss unit (except colossus), it also has the highest health per dollar of any unit in sc2. In this set, 1 power stops all of the threats posed in the early game by other races, zerglings and marines. After that it just adds health to your army