An ambitious and rather impressive project to say the least. At some point though, you have to ask yourself if it would just be easier to build a 3rd person game engine in the likeness of Starcraft, outside of the Starcraft II client, rather than modding a real time strategy engine to function as a 3rd person game. A good comparison to this would be the popular Warcraft 3 mod Dota, and the stand alone game Dota2.
When you’re constructing a mod for a game, you’re limiting yourself to that game, and that game developer’s rules. You also have little to no say in the matter if the developers of the original game suddenly decide to shut you down for any reason.
Update 2018:
I was curious whatever happened to this. As it turns out, it did become funded, and was eventually released with a few caveats. It does require Starcraft II to play, and is released inside the game's arcade game section. as of 2016, there's 4 maps, and development seems to have ceased.