I think it sounds reasonable. I don't think you will get better performances from synths.

If you took that master project to a DAW, added the proper EQ and used Ozone in the master buss (at the very least) I think this would sound considerably better.

I could run Ozone on the mix "as is" and improve it but the best improvement is made when you have the tracks and can work on them individually to add multiband compression and EQ to say... the drums.... it really allows the snare to pop and the kick to kick.... and the cymbals to sizzle. Using a low cut band pass (EQ) on the bass helps to tighten it up.

It becomes a total process in itself. I probably spend more time on my songs in this stage of the process than any other including the recording.

You can find my music at:
www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.