Bummer to hear there were missed expectations. We try to be pretty up-front about the way SubmitHub works and who you're sending to.
95%+ of the curators are doing it as a hobby because they enjoy sharing music -- they work day jobs to pay their bills.
At no point in time do we present them as "professionals". In fact, it's quite the opposite because we tell you that they are hobbyists who may give you illogical / nonsensical feedback.
If you're seeking highly-tailored industry-specific feedback and input, you should anticipate paying $50+ per recipient.
In the meanwhile, you can try and identify SubmitHub curators who might provide above-average feedback by looking for a note next to their profile that says "Users typically rate this curator's feedback as above-average".