I would like to see a decentralized chat. The problem is that it hasn't really been done before.
Maybe someone will come up with a wonderful solution to the problems of routing user to user. Or maybe someone will come up with an entire new internet that is peer to peer from the ground up.

Otherwise putting steemit.chat in a widget inside steemit.com will be really easy, or really hard. There is either already a widget for that, or there isn't, and they have it locked down to their interface.

One thing I like about steemit.com is that it doesn't have all those sidebars. Reading the blogs is distraction free. All of the suggestions above start cluttering things up. I do not have a good balance to recommend.