I like the impression of an action feeling. The particles and effects look very cool in the screenshots.

On the other hand there is little or no lighting. Models are blocky and you should completely re-made all textures.

If I imagine this project with professional models and textures and good lighting then it could have commercial quality.
If you dont have skilled model and texture artists available, then you could get mechs at 3drt.com and textures from Gamebeep, 3dtotal or Dexsoft.

I think your project is worth improving it.