Larry, I just made a group in the sidebar of Server Admin, but I have not figured out how to open multiples all at once in server app like you can in Server Admin. good question... should be a feature.
I'm managing three Lion Servers remotely in disperate locations and I'm getting tired of typing the complete domain name for each one every time I want to log in. File Sharing and Screen Sharing have ways to "icon-ize" their servers. How about Server.app?