Couldn't you do text? I would be interested in your opinions, but I don't watch online videos, it's such a massive time-waster. I can read about 10 times faster than English is spoken.
As a consumer I agree! I hate watching videos (I don't watch TV or movies or even listen to music) and am a voracious reader through and through, precisely because it's so much faster.
I started a youtube as a potential business venture, however, so I follow the market and don't project my own preferences. It's unfortunate that it means I can't please everybody.
My vids are only possible because of my voracious reading, btw, because I do a tremendous amount of research for each one, and attempt to collate and package it for my audience.