I'm not hearing the echo or doubling on the drums, so maybe you fixed it. Just a thought: did you render the drums tracks but forget to turn off the plugin? I've done that before, then wondered why it sounded like the drums were sounding thicker than normal.
I like the song. Some kind of bridge or change up wouldn't be out of place. Interesting arrangement, good performances. Nice atmospheric synth parts and effect. You've mixed the electric guitars low, which creates a bigger, more open sound to the mix in most cases.
The level of some of the drum fills seemed low. I agree with Taras that the kick and bass could be tighter. I think your kick is just too busy. It's playing a syncopated part while the bass is more restrained and emphasizes the quarter notes. There are some groove issues there too. Thought I was hearing a little swing on your eight notes, but it seems like your kick and bass aren't quite agreeing on how much swing to swung. That's a problem I've often had to work through as well. My suggestion would be simplify they kick, put the emphasis on the quarter notes, and throw in the occasional syncopation sparingly to lead the changes.