Just bumping this as it's been quiet for over a year and adding my voice to the request for being able to group sessions in a tree structure. :D
OK. That's already on the TODO list.
It would be nice to be able to group several connections in the sessions screen on a tree like structure (group logical hosts under a cluster name, phisical names under logical names etc.)
I have a lot of connections referring to the same machine at one time (a cluster logical host, a cluster phisical host and a application logical host all pointing to same machine or on different machines depending on the current cluster state)