What if Tim Burton directed the rest of the Batman films

We all know that Tim Burton only directed the first two films in the first Batman film series, but what if he directed Batman Forever?

Changes

 * Michael Keaton would still play Batman rather than being replaced by Val Kilmer and then George Clooney.
 * Billy Dee Williams portrays Two-Face again.
 * Johnny Depp plays the Riddler instead of Carrey.
 * Dick Grayson is Nightwing instead of Robin.
 * Batman and Robin wouldn't exist, being instead retooled as Batman Unchained, with Scarecrow as the main villain and Harley Quinn and Hugo Strange as secondary villains.
 * Harley Quinn is retooled into Harleen Napier, being Jack's younger sister who becomes insane.
 * Alan Rickman, Robin Williams, Harrison Ford, Val Kilmer, Gary Oldman Or TBD plays Scarecrow.