You can create all the awesome menus, media, and client modifications you want, but you are eventually going to smash your head into the closed source game code.
DP's development is definitely not being held back by its community. ViciouZ, XBain, sk89q, Zorchenheimer, and the others I've forgotten to mention all put considerable time into making DP better. They all run into the same wall.
Eventually you get fed up trying to help a closed-source game.