Do you think the Harry Potter series would been better served as a TV show with a seven-year arc or do you think it's fine as a movie series?
To answer your question, absolutely not.
HOWEVER
I think it would have potential if it were set in the "Harry Potter Universe" but followed his son instead and a new threat to their universe. Then you could cast somebody other than Radcliff as the father (Harry Potter) and pull together a fun new mix of people that doesn't corrupt or be limited by the novel/movie canon.