I love to watch Starscream fuck himself over by being an enormous turd! We both get what we want!
Megatron's "I want to LIVE!" moment being Starscream opening his mouth and him realizing that if he dies, Starscream wins was all kinds of brilliant.
I'm also enjoying Starscream's bile over the fact that Optimus stomps all over most of his fuckery by accident.
Like, recently they found one of Cybertron's lost colonies, and Starscream set shit up so he could rescue them and put them in his back pocket.
Optimus shows up, and they're like "Well, he's a Prime, and he's carrying the Matrix of Leadership, AND the hilt of the Star Saber so he kind of ticks off all our checkboxes for 'Messiah'. We're very grateful for your help, Starscream, but we're going to take our cues from the emissary of Primus."
Starscream's reaction was about what you'd expect.