Again, LOTS of potential here.

I liked the mood change, but the squelchy bassline (sounded like a 303) didn't seem to fit so well with the mood. It almost had a kind of loop feel to it, like you had a sample of a bassline and just put drums with it, although I'm sure that is not the case.

The effects where good though, again use compression to bring the drums out more. Heavy compression on the drums with a long release can "flatten" them and make them sound huge and loud, and a quick release time can make them "pop" and cut out of the mix. Especially for the intro, quick punchy drums are obviously the sound you where looking for, and would work quite well.

Good stuff!