Voted "some", but I hope with modules it will be only "a little" or "none".
I have elements I don't want in my games for setting reasons, but don't ban, like dragonborn, warlocks and half-elves. If a player really wants to take those options, I'll just point out that such characters would be way out of place, might need to be refluffed and the characters "out of placeness" would be a major plotpoint.
If I ban things or make changes, it's because they put a major dent in my or the other groupmember suspense of disbelieve (I'll note this includes "gamebreakers" as they tend to take you out of "imaginespace" and into "rulespace"). This not only depends on the people involved, but also the genre you aim for, I guess.