Probably for the same reason they are using "21 Jump Street" as a name :lolIt just makes me wonder why they even used the same title. It seems like it would stand on it's own as a completely separate movie. Just like 21 Jump Street. The new movie coming out with Jonah Hill is a comedy, unlike the original tv show, and has nothing to do with the original series.
QFT!!I figure there is name recognition in the title, but I would think that star names like Johnny Depp or Jonah Hill would have the same effect.
Hollywood can't help but ruin everything.... they can't come up with an original idea. Thus all the remakes, reboots and sequels.