Dang dude... sounds like you could even make a sequel for this game all by yourself. Under a new name and creator of course but I'm sure you'd get good support from the 2DCG enjoyers (me included)
The original creator is nowhere to be found and in a few months this game will be 10-year-old so you might as well create a spiritual successor instead of modding it. The mods are not linked on the front page so unless someone browses the pages... The visibility is very low, and many wouldn't even notice your hard (and awesome) work
I really do appreciate you keeping the game alive, but we haven't gotten anything like this in years and I'd love to see more of this. If you have the capacity, I'd seriously recommend creating something original with this game's assets
If I didn't suck with computers, I would sure love to make a game like this.