Awesome remix; really love the vibe on this one!
2 things I think could be improved would be the mixing and maybe a bit more variation.
The high-frequency elements are overly present and kind of drown out all the instruments and percussion in the lower frequencies, overall sounding to me to be too much high-end presence.
Secondly I think the song could be a bit more varied, it's kinda the same vibe. Pattern and notewise it does change up a lot, which is good: but the instruments and sound lacks variety, having some sections have different instrumentation for a different vibe could go a long way in keeping interest throughout the whole thing. Not that big of a deal though; plus could just be my preference.
Overall though good stuff :D

Awesome composition and arrangement, although a bit short. Mixing seems a bit harsh on the high frequencies, that's the only problem I hear.
Still epic regardless!

Really love the melody and writing you have on this, it sounds really good!
It just needs better polish, sound selection, and mixing.
For one thing, I would definitely recommend turning down the amount of reverb, especially on the drums; having so much reverb on the drums really kills the punch they would have.

Honestly there isn't really anything Jazz about this to be honest... and I think the song would sound better having a good synth lead instead of the saxophone. That's where sound selection comes in, choosing what kinda sounds are best fit; and in my opinion I don't think the saxophone does.

I really like the writing you've done for the track though. If you don't mind... i'd actually love to do a remix on this if you're down :D