Valve shouldn't be nickel-and-diming gamers for every and any new small piece that they release for their game -- whether it's new maps, new small levels to the game, a SDK, or whatever the hell they add. Neither should any other company, either -- for that matter. We gamers do not really need that trend to begin to become the norm by game companies, anyways.
Kudos to Valve w/ their stance of releasing extra small stuff for no cost to us gamers.
Now, go finish HL2: Ep Two and Ep Three, you bastards!
And improve/fix the issues I have w/ Steam itself, dammit!!