Backstory: YouTube is great for entertainment but it’s hard to find consistent high quality educational content.
The Idea: Video platform for education
Deep Dive: You would build a video platform exclusively for educational content. You would have relevant categories and tags for education. You could keep the content at a premium level with moderation and a review process on submission.
Validation: Education is surely changing in the future. You could seed the content by curating some YouTube videos.
Monetization: If you provide enough value you may be able to charge a small monthly fee. This one is a larger scale play.