Bah, it was built into the basic numberkey binds all along. I just didn't read all the options that were there:
divide powexec_location me summon demonlings
multiply powexec_location me summon demons
subtract powexec_location me summon demon prince
What was the command/trick to summon a pet adjacent to your MM without having to click the location?
I've been unable to find the post that mentioned this, even though I've been searching for quite a while! Thanks in advance for your help.