Survival 2.0 manages to improve on some of the problems presented in Megabyte's script, by eliminating rounds and implementing continuous waves, as well as tweaking enemy balance and adding Bobs. The slow build in difficulty up to the rocket juggernauts is more rewarding and engaging in my opinion. Having the ability to call in Bobs for reinforcements adds another layer to the game as well, and has rekindled my own and others' interest in the survival gametype.
However, the biggest addition to this version is Ben's survival script generator, which allows the player to easily design and implement their own survival scripts. While still somewhat limited at this point (you can't open existing scripts as far as I know), the user interface is pretty intuitive, and the ability to customize your own survival script is worth the price of admission on its own. So far I haven't run into any problems with it. Well worth the download, and good job Benoit!