I think the Mix sounds Great… everything sounds well balanced on my speakers.
If it was my track i would be looking at that rolling bass and adding a few layers to give it some movement. Or some other faster elements to keep it moving.
There is a fast sort of melody towards the end but it sound s a bit thin… its not driving it along or adding groove… its sort of stuck in the middle.
Either make that melody massive but have it starting off really filtered or make it in to a bassyier groove element.