Any time you'll ask for feedback someone will tell you to do things differently and it will never end. I've been hiring tech folks for 15 years, with 25 years total experience, so I know what I want to see when I look to fill a role, that's how I build my resume. I want it to show at a glance where I've worked and what I did there, no more no less.
If efforts are made and you see a difference, then don't stop. If you see no difference (eg uptick in responses or interviews), as is my case, I've got nothing to say that will help you. Sell your house and fuck off to Europe maybe.