Quiet and distored bass isn't good.
I don't like how the bass is super distorted, and quiet too. I think you should bring up the bass volume just a bit, and maybe use less distortion or maybe bring down some of the higher sounds in it a bit quieter.
I think you also need to throw in another synth in there or something (which I'm assuming you're going to do, because it's a preview). If you were to leave the song how it is now, I think it just sound way too empty to me.
The drums have a pretty good rhythm, but there's just something about them that just doesn't seem right to me. I can't put my finger on it, so maybe it's just me...
Other than all that I think you have a decent song in the works here.