If you want to go super-advanced, you could change the rating-system from overall rating to content, and technical quality. 
I think the "Full Stack" videos had bad quality, but I will specifically report if I come across bad quality.
In general: good for internal and external use, you could put up a guideline on what equipment/codec etc. to use. This should - long term - result in consistency, even from different contributors.
Oh, and I am thankful for all content online. Tough ocasionally I skipped a video since I simply could not get any value from it (not being able to hear anything, not seeing the code, ...)
And thanks for the great support here!!
