I gotta know what kind of lead that whistle is. It sounds super versatile. If it's not in fact modeled after an actual instrument, props for making it sound like it is.
I think some things could be done to make this pop
For one, make sure the kick and snare cut through. They're pretty quiet in the mix relative to the lead and side synths -- but I am very thankful the lead is audible.
You could do to cut out a lot of the low end reverb wets and hi-pass those to 250 hz or even higher if the instrument is in the low register. I hear a lot of reverb which is sucking out the power from those chords!
It also sounds like you are using stock drums for the kick and snare which is not bad. They just don't seem to have a lot of character.
Really the only thing that is holding this back is mix. Compositionally it sounds great!