1mana monsters

No I won't disagree with you there but your reason for worrying does have its holes.

You have to have 5 K-Army Guys ready to play, they can't be killed before they get to use their ability, and it only works at full strength on your own turn.
Granted 45 damage for end turn triggering is nothing to laugh at, but having Ardam and Diane in play can give you approximately that with better survival ability; not to mention that means you have 5 K-Army Guys just sitting there and you've locked yourself to your monster max (arguably not a problem with Torpedo Launcher or Kerpow based decks).

Really I'm fine with either x3 or x2. So it's up to the popular vote.