A critic?! ... Darn.
As much as I hate to say it, I think you overdid the, uh, bounce(?) a lot too much throughout most of the 'filler'. Sure, it would probably sound AWESOME on huge speakers with even huger bass power, but for us (quite a few, I'm guessing) with dinky laptops and iDevices... Not so much.
-Although that just might be some D&B rubbing off into techno. Like where you put in that random short chunk of it a third of the way in. I may not have as much expertise in D&B, but I doubt it mixes into techno as well as techno mixes into D&B.
Also, you used quite a generous amount of 'filler'. (Ya know, that single tune that you use as the base, but excessively and without anything else backing it up)
And a tad smoother transitions would be nice.
... Yeah, it sounds like I don't like it at all, from that. But between the great tune and piano (gets me every time), as well as how out of my league something like this is, I can't help but liking it. And by extension, trying to help improvement in the only way I know how :x
... You rule :D