I use Spotify with headphones and in my car almost every day. Each requires significantly different tuning to get the right sound. E.g., improved bass for headphones, but lower it in the car which has much stronger equipment. It's pretty tedious to dig through 3 levels of menus to reach it every time I want to alter those settings. A simple, clean solution is to add one line to the "..." drop-down that takes the user right to the equalizer.
Before I posted this, I did check for duplicate posts. There are quite a few which then link to even more duplicates, but none made the threshold of 'likes'. Shouldn't the sheer quantity of times this has been posted mean something? As far as community feedback for an app, this seems like a fairly small ask. However it's been suggested for years but ignored because the original post (3 i've found so far with numerous duplicates) got ~60-80% of the votes it needed for Spotify to deem it worthy to pursue.