Good... for a WIP.
Nice melodic dubstep, if this was intended to be really filthy, you have failed completely. If you want to get filthy dubstep synths with massive, look up YAYA bass tutorial on youtube. I don't mind long intros, as long as the song itself is long too. With this song, this was not the case, and it ended abruptly. Basically, it SHOULD go, intro, drop, bridge, buildup, drop, outro, while this song was just intro, drop. As a trance or electronica song, this was good. As a dubstep piece.. not so much. Also, use LFOs to automate wave tables, and mess around with massive. Make your synths complicated, and if it sounds like crap, try again. You'll find funky stuff. Good luck.