the only thing i hate about X2 and X3 is the waste of Cyclops.
the only thing i hate about Wolverine is the ruination of Deadpool
i don't think i actually hate anything in X1 or FC.
i rationalise the second item as: it's not Wade, it's a clone. the clone is called Deadpool, Wade isn't. Wade can later claim the name in the Deadpool movie.