I will say it again, F Warner Bros. for not letting Tim Burton make his Batman 3. It probably would have had the same hype as Batman Forever.
You know what, as much as I loved & will always love '89 Burton Batman, and appreciate it's mega-weird (that's putting it lightly) sequel - I never really minded that they ended the Keaton/Burton run after that. Maybe it's because things went so off-the-rails following that, maybe it's that even Returns felt kind of extraneous and sort of took something special away with the self-contained-ness of the '89 movie, maybe it's my tendency to start getting tired of shit by the time they get to number three of ANYTHIING (movie, film, game, musical album, etc). Yes, I am sure it would definitely be interesting to see where they would have gone next, I remember reading in some tabloid back in the day what one of the proposed storylines was going to be (it sounded completely overboard insane, even for that universe).
Look at Star Wars, look at Robocop, look at Ghostbusters.. sometimes it's good for us as fans of something, when they stop after number 1 or 2.