New characters are constantly introduced in shows/series, and new revelations of established characters are also commonplace. If nothing is different at all then there is not even a point of having a sequel as it'd be the exact same thing.
Did doing the same thing ever stop anyone in Hollywood?
If I get older, I get more and more the feeling I have seen this already. These examples I named here are not mere remakes or reinventions, they are very much the same.