What elements make for the best games?

I was thinking about the different games that we play and I started thinking about what makes for the most fun games. Is it that no matter what, everyone is always playing because of constant respawns? Or is it that you have multiple objectives to choose from so getting to form a plan on the spot gets the mind into it? Perhaps you just want kill after kill. Maybe you really like reading the descriptions before a game and getting into the story, more of a milsim feel? So what have you liked about the events that have been put on and would like repeated. I want us to keep with the successes and drop the stuff that isn't working or that people don't like. Maybe you just like playing somewhere new every week. So let us know.