Idea posted by @Sylvanus K
Opt-In 'Seeking Crit' Option
DeviantArt had a function like this at some point, not sure if it still does but it was a checkbox that could be ticked on the upload page that would add a prompt for critique to the post. Unsolicited crit can be off-putting to potentially destructive to whose receiving it, so an option like this to designate when user's want crit and advice would mitigate guessing if someone does actually want that feedback.
I don't think it should be anywhere near as formal as dA had it set up, but an opt in tic that opens a text box for what exactly crit is wanted on, with these displayed as part of the description, would be nice.