Totally love this game. One concern, though - after playing it for a while, eventually they're gonna tell the same old stories and have the same old conversations. Now, for $5, what do I expect, right? Sure. But I would pay Real American Cash Money for more dialogue and more characters.
The extra characters wouldn't even have to play - it could be Sam stopping in to see what's going on, watching the game and commenting from the peanut gallery. Or The Cheat could drop by and fill in for Strong Bad while he goes to the bathroom. ;)
Just have fun with it! :D