I use your utility to heal domestic animals, because I hate seeing dogs and cats dragging themselves around in pain and I've never gotten an Animal Caretaker to do anything useful for them.
I used it once to heal a baby whose mother was in bed, unconcious, for a year-and-a-half, because I thought laying in the middle of the floor was bad enough without also passing out from pain. Otherwise my Dwarves have to take care of each other.
I have on occasion used it to change a mood requirement. Most often it was from glass to gems, on a sandless map. I try to find maps with sand now, but I like having the ability at hand even if I don't use it.
I've used it to grab wild breeding stock (change civ and make tame), and also to convert a domestic animal into a breeding partner for a purchased exotic (horse into elephant, for example).
I've used it to teleport in an emergency. For example, if all the cats in the fortress start to parade out through the entrance into which I am admitting a horde of orcs for purposes of eradicating them, I put the cats into the meeting area where they stay long enough for me to get the proper levers pulled. I also saved some Dwarves and animals who fell through some ice when I had them working on something and mid-winter ended.
I've used it to resurrect Dwarves or animals, but that doesn't seem to work very well. Eg, the Dwarven Liaison doesn't come back even though you've revived him. It's better to teleport them out of danger while they are still alive.
One time I used it to set the mood of a band of bugbears to melancholy. I had turned invasions off but the setting had not yet taken effect, and I did not want to deal with babysnatchers just then. It took a little while, but they eventually died of their mood.
I just recommended the program to someone who wanted to know the civilian skills of some Dwarves who had died as military.
I'm considering experimenting with setting the female partners in some of the marriages to male, to prevent them from having any more children in my one fortress.
In other words, I try to use any feature I can see a use for.