I've finally run into at least one person who lies in wait to steal the boss kill. I located those within my boss level range and if I logged on at the time they were leveling up, I politely stood back until they were done and had used up their energy points.
But now I noticed in the new profile design the energy points aren't listed. It would help to see them but I can easily estimate regarding other factors of whether the player is done. Even in a "dog eat dog" world such as an online game there should be a modicum of courtesy. I hope I can encourage others in this fashion as well. I mean, we all have basically the same goal.