Well, we're not changing the gameplay at all by making all new assets. i'm trying to pull a bunch of good models together for the 1.5 we're working on, but even with new sounds, models, textures and storyline, the game is the same. plus, david and the guys always talk about how user created content is their main interest, so if we make new stuff and pull it together for a big update, then it's cool. i get what you said, and i totally agree, but we're not changing the game engine, or the way you play the game, we're just making something new so that nobody can get bored.
BTW: i think your textures are the most important part of the 1.5 update that we're taking a stab at.