Question for SPN fans

I know there are a few of you on the flist. Can someone point me to meta, if there is any, about Uriel? I'd like to know what the fandom thinks about:

1. His distaste for humanity. Especially the 'mud monkey' thing.

2. The decision to cast a pretty white man as the 'guardian angel', and a black man as the 'heavy' angel. Does the fandom think this is significant?

3. His future on the show.