Every section of the site, with a checkbox. Checked = keep. Uncheck what should be dropped, and star the handful that are genuinely the interesting core. Roadmaps can be opened to keep or cut individual topics.
Nothing here changes the site. Your choices are saved in this browser as you go; when you are done, copy the JSON at the bottom and hand it back so the cuts can be applied (hidden behind a flag first, never deleted outright).
This updates live. Paste it back into the chat (or download it) and the unchecked sections get hidden behind a config flag, with the content left in place so anything can be brought back.