I hated pantos when I was a child and I still do. Pre-children I managed a theatre and had to spend every March watching millions of pantos on video so I could book a company for the foollowing Christmas. It was hell.
I really cannot bear to see badly done pantos. If they are well rehearsed with a script including jokes for adults but which still appeals to 4yr olds I can just about stand it, but I've seen so many awful ones...
There are panto traditions which should be in every show:
Baddie should always enter stage left, Goodie stage right and they should never appear on stage together (so the same actor can play them)
Dame should arrive with a new costume on every time (on top of the previous one) and should have a scene where all the extra costumes come off one after the other - down to nightgown.
There should be a ghost/transformation scene in every one
The scene before the finale is in front of the curtains to allow for the set up - and all finale costumes should be new ones.
Slapstick scene (usually cookery or wallpapering) has set pieces of business involving props - flour/shaving foam cakes/empty paste bucket etc. No excuse for scrimping on how these props work
The panto developed from Italian theatre tradtion but became used by theatres as an opportunity for the theatre to show off what it could do - so all elements are involved, including the trapdoor and flies if there are any.
Oh, I know this doesn't matter to anyone really but it does to me and I hate paying £70 for a family to watch a panto that has been thrown together. The soap stars can get £30,00 a week in a main house show fgs - so they should damn well work for it.