It sounds like a fun topic until you come up with the craziest, most ridiculous, most awful idea for a reboot/remake that only a sociopath who actually hates cinema and cinemagoers would make, and then it actually gets made.
Nonetheless:
LA Confidential, toned down for a PG-13/12A certificate and with all meaningful political and social context removed, with incoherent and needlessly flashy direction by McG, seventeen writers who all ruin each other's work until EL James is brought in to improve James Ellroy's original dialogue. With Colin Farrell replacing Russell Crowe, Rosie O'Donnell replacing Guy Pearce and Steve Guttenberg replacing Kim Basinger.