Good for you! Now go to Github, download the source, get a compiler, learn C, and dedicate your time to re-working the enitre game engine to work on moving solids! Also make sure EVERY element woirks like the do. And don't forget to make saves load, save, and you need to make it fluid enough for other systems to run. Plus you can't charge for it, so you'll be doing tihs for free, source code out there, and doing this under the pressure or other people suggesting this wanting it by... the next few updates?
On another note, you'll need to make more items because of course like the STKM addition, people wanted more addons.
About C codes, i dont know a lot about them, not in openGL level (if its what you use to creat the graphyc interface) but what im saying is just that. The best thing you can do now is develop a way to creat at least BIG POWDERS, like big squares, OR take a long time to really rebuild tpt. Idk if its that hard, even with many devs helping, but i really think the comunity would be pleased to have this, because its a really, really revolutionary thing, that would open a new concept of creating simulations!
I think its a good deal, even if it takes a year for devs. But if you wait for me, will take more than some years =D