I’m going to be honest and open here. I have made music since 1998, and I have never ever got real detailed analysis of my music productions with constructive feedback in my career.
Fellow composers won’t do it because they don’t want to spend the amount of time it takes to properly analyze someone else’s track and write well structured and detailed feedback. Labels, publishers and libraries won’t do it, because time is money.
I have learned over time to:
Trust my instincts (does it sound good, where does it lack?)
Trust my ears (by referencing other tracks)
Trust the meters (LUFS-meter, Stereo Spectrogram, EQ balance etc.)
If you really really want that high professional level of analysis and feedback, I would think the best way is to pay for one-on-one consultation on Skype with a professional music producer that offers this service.