I’ve heard talk here and there about the fact that, at the current rate the Harry Potter films are being made, the three “kids” will be in their early twenties by the time Book 7 is put into film.
In a word, SO???
Actors in their twenties play teenagers all the time. Furthermore, older teens play adolescents and younger teens all the time. Meet Amy Davidson, age 23, who plays 15-year-old Kerrie on Eight Simple Rules for Dating My Teenage Daughter. [Interseting side note]Though she plays a younger character, Amy Davidson is actually five years older than Katey Cuoco, who plays the older sister in Eight Simple Rules…[/Interesting side note].
Meet Frankie Muñiz, age 18, who plays 15-year-old Malcolm on Malcolm in the Middle. [Another intersting side note]Frankie is actually about three months older than Justin Berfield, who plays Malcolm’s older brother in Malcolm in the Middle[/Another intersting side note].
Bottom line is that having actors much older than their characters, particularly when it comes to teens, is nothing new and is actually quite standard in filmmaking. I see no need to hire new, younger actors as the Harry Potter film franchise progresses. I say, keep Daniel Radcliffe, Emma Watson, Rupert Grint and the rest of the kids until the franchise is finished.