Mrs Brown is hugely popular - the live shows are always sold out, often extra dates are added because of the demand. The BBC has already contracted Christmas specials until 2020 and the shows get the viewing figures to justify it.
Not having seen any of it I really can't call upon it but after giving Mrs Brown's boys a fair crack of the whip with it been so popular, for me it was one to be avoided and it appears I was correct to do so.