Nothing mature, let's leave it at that. But always consensual.
Dreams inhabit a really unique space where the rules of reality don't really exist so I would assume there's no real limit to what dream manipulation could be? My Aunt uses it in her therapy practice, meets her clients in a guided dream scenario to asses and work through their trauma. I had an ex whatever who would set up elaborate battle royales for a certain clientele.
I've heard you do - interesting - things in that department though.