Brian,
I also use Simple Control (previously Roomie Remote, now Legacy :-( ) and control simple aspects of MC using the url options in SC.
Having a Media Guide interface for MC like there is for other programs would be wonderful, although JRemote exposes significantly more options than I've seen in the current media guide. For example how and when tracks are played.
The Media Guides require a subscription to enable them, even if you are not pulling the information from an external source.
Due to the actions of the Simple Control Developer with regard to keep expecting users to purchase a newly named app, and a very closed system, I am now looking for an alternative solution.
Simple Control is now effectively been relegated to a Front End to url's assigned to buttons and launching via url handlers specific apps such as JRemote for better control and some level of integration.