Count me in on the need to bring back the ability to block entire domains. I foolishly fell for one of those "you are a winner" emails and now my inbox is flooded with garbage. They seem to be coming from specific domains. I have set up a filter, but I am not sure if I set up the filter correctly. Time will tell. It is annoying because sometimes when I try to block senders in bulk, I accidentally mark real senders I do care about.
Hopefully Cox will bring this feature back. It would be a real positive in the overall customer experience.