I think you have some interesting ideas in this submission!
I would probably agree that the panning could be pushed back towards the center a little bit, but I would also like to hear a little variation in the way some of the melodies are phrased/articulated. For me this mostly applied to the horns, but overall I think it would add some nice expression from the instruments.
I'd be curious to hear what these would've sounded like if this jam had a little longer run time and you had a chance to further develop these pieces because some of those ideas were quite nice. Hopefully you give it a shot sometime!
Keep up the good work :)