*Sounds are nice and crisp.
*Sub bass is pleasing to the ear
*Plenty of air in the mix, so it's well balanced.
* The drum pattern stays the same much too much. It would only be nice if you're in the mood for extremely repetitive music.
* Drum sounds stay the same too much.
* Bass pattern is pretty dull.
* There is nothing in the texture to maintain interest.
Ambient melodious liquidy tunes can afford to be repetitive, but the best ones do something to keep you there - they subtly vary continuously, or introduce new elements periodically.
I'm agreeing with the others about variation in the bassline. And you could maybe even try a whole other note pattern for the 2nd drop. The atmospheric stuff is working well, the fills and breaks are nice as well.