I think Jefferson, the traitor elf, Sessions should really own "traitor". It's just such a lovely expression. (I have no idea who first used it.)
I'm not real big on "traitor" or "treason"; they're such old school jingoistic-sounding epithets. Treacherous works for me. "Treacherous Trump" has a nice ring to it.
I don't know why we can't go back to "Donnie the Idiot", though. Is alliteration all that important. It's also good to stick with disparaging terms that his own players have thought up. That's why "voodoo economics" stuck for so long.
Donald, He's a ******* Moron, Trump.