Feedback on browser plugin idea

Hi COGA Community Group, I'd like to start a collaboration with a local
university to develop a browser plugin able to hide parts/areas of the
websites in order to help people to focus just on some parts of the page. I
mean like if there is a website with Ads on the side maybe you'd like to
hide them to focus on the main content. Or maybe just to hide images in
websites, but also letting you decide if you want to hide some of them
instead of just all of them. Things like that. I'd like to develop
something really flexible and customizable. I'd like to hear your feedback
on this idea to know if you think it can be useful or useless, or if you
already know some kind of software that allows you to hide/show areas at
the user's will 🙈 Any help will be appreciated, thanks! Have a nice day!