Rapunzel, despite her lack of experience she is good to her people and in the show I believe she still had her healing abilities so that's a bonus. I would defend her. Everyone else can GET THE HELL OUT MY SIGHT.
Princess Bubblegum is a sociopath
Charlie is in hell so I'll pass.
Star is too chaotic
Elsa loses control of her powers EVERY TIME she's in a bad headspace. God forbid she gets depressed.
Princess Peach is always getting kidnapped and having her kingdom either vulnerable to attacks or in absolute chaos without her.