Ken I agree with you completely.
I think there is like a gigantic paradox in that situation, since we are more than ever in an era where the visual aspect has greater impact than before, since we are at the zenith of staring (invasion of pc, internet as the new media) and the phenomena of voyeurism, which comes as a side effect of the social networks (fb), but it seems like when MTV turned 'reality show crap tv' the importance of the video and the 'dramatic persona' or the entertainer was lost, and gave way for mere mortals to become famous, or visually appealing, and then in recent times 'the wall/ the profile' as one's personal visual representation, the everyday's man piece of the cake.
I was reading Madonna's wiki page , and there is a big portion of social criticism in regards to her becoming Madonna because of the videos. Madonna=videos.
These are just my scattered thoughts, since I am really tired and all over the place, but I didn't want to leave you hanging with your opinions since I think it's a good topic and I would like to hear more.
I personally love music videos, and visuals, and it plays a big role in the way I receive and perceive music.