Agreed. If they added the dodging. executions, and melee weapons back in, that'd be great. Now, I'm not saying the game is bad; it's a great game on its own merits. That being said, they should add something like a survival mode, so we can play Thing-Thing like it was meant to be.
Then again, they might be working on that, since maybe the game wasn't completely finished when they released it. There's plenty of games like that out there, so maybe we should hold our tongues till then, see what happens.
For now... 3.5.