In another mud which shall remain nameless, it was acceptable to send feelings and some hazy images over psychic communication. I thought it added a lot to the experience. Sending full, detailed images of things wasnt really allowed, but small, short bursts of things was okay. You could also send quick bursts of feeling attached to your thought.
Example cc Broguy /warmth/ Hi Bob! How are you?
Or cc Broguy *vague picture of a dog curled up on someone's lap*
I think you'd need to come up with some restrictions - though people seemed to self police fine in othermud.
This isn't allowed currently, but maybe a SIC chip that's been enhanced could? A simple procedure to essentially unlock that feature of the chip.
It's not ground breaking, and most of it is flavor, but I think it could be really fun :)