I have 2 webmaster ideas but instead of I starting it i thought someone finds it good may start it.
1) A site with just the best answer alone. Example: Q&A script , admin start a question and post the best answers available in the internet. I thought most of the answers are spread across but an admin could collate it and make it available in one site.
Domain name i found - bestansweris.com
Script i preferred - https://www.question2answer.org
2) A wikipedia site for webmasters which i haven't seen it anywhere.
Script - any free pedia script