I love hearing the early music that people make. In ten years you'll be producing some heavy future jazz musics and only the real fans will say "remember Sawce? Damn we're old now."
I think you got some room in this for some more instruments and techniques but the fun thing about digital musics is that you can always open an old file years later and hit it with new knowledge. There's room for basic sine wave pads, string or violin ensembles, Rhodes Mk II, saucy clavinet melodies, tamb and shakers...
That was a really interesting choice to put so much reverb on the hi hat & clap snare. That effect takes the place of potential aux percussion in the mix. I'd have traded the reverb for more percussion instruments like tambs, shakers, more hi hat layers... track still funks something nice. I'm just trying to get those creative juices flowing a little :D