We intend to use overlay icons to show extra information about the sessions (such as what protocol they’re using), so we look into this at that point. I don’t have this commited to a version yet, though.
We will include this for xterm terminal types in v2.60.
Thanks for the suggestion. This is currently low priority for us. We will gladly reconsider if lots of people vote!
Thanks for the suggestion. We will look to include this in a future version.