I don't mind that it's a png. I mind that there is transparencies where you don't need them. fine, save with transparency if you're going to image edit it and stuff but his is just sticking a light gray image on a white default modacity background.
Printable View
source ftw.
It's weird. It's like you're trying to make a high-res model, but you're simultaneously worrying about polygon count. Those methods are very much at odds.
Just stop worrying about polygon count. It doesn't matter right now. It is literally the last thing you should consider. Just build your model. You'll want to bake a lot of that detail into the texture, anyway. Keeping all that interior polygonal detail that looks fine in your modeling program will result in a shimmer-y, aliased mess in the Halo engine.
The tube thing on the bottom looks like it needs to be a little bigger.