I set up my own Ableton MCP rig last year to do this. It works extremely well. I have had Claude organize, rename, colour, and prepare 100+ track songs for mixing. Unlike the OP I have not used it for any kind of creative use, although I did experiment with giving it access to my vst library and trying commands like "put a vocal compressor on the lead vox, with a high ratio and a fast attack", with absolutely terrible results.

The organizational and assistive ability though was/is outstanding, and using it in my own projects honestly made me sad that we're seeing AI integration everywhere that automates the creative work and leaves you with the tedious work. I don't expect we'll see AI updates to DAWs from vendors anytime soon with features like "speak into your mic and tell your DAW to group all the snares, color code them different shades of red, and rename them", but that's the part of the process I wish we were trying to get AI to tackle.