Don with a beard? Don't think so.
Movie looks like fun, but Garcia's bearded don character is just unbelievable; Mob rules wouldn't allow facial hair apart from a moustache. Remember the line "a Don doesn't wear shorts - it's undignified!" from Carmine Lupertazzi?
Just because beards are fashionable right now it doesn't mean they'll have to throw it on any character to look cooler.