Seems like they got more right then I gave them credit for (then again apparently Cameron is a fan of the manga which lead to him getting the live-action rights) but that is what I get for being a major fan of the franchise. They could go on with the motorball events but those take place after Hugo dies in the manga, it's her way of dealing with her grief from loosing him (and her fallout with Ido). Again Alita's past doesn't come up until pretty much the end half of the manga so they already skipped ahead quite a bit (and most of that was rewritten with Last Order and Mars Chronicle, god damn authors changing shit). I have a feeling if they make a sequel they'll go with her time as a Tuned agent for Tiphares (the city in the sky, I will not speak the name the movie gave it) if they decide to leave the motorball stuff. It's probably the second best arc in the entirety of the original manga. Then again they could just skip way ahead and go into the events of Last Order (the Zenith of All Things tournament would be fucking amazing to see adapted in either an anime or a live-action if done right but that is the last half of the Last Order run so chances are high they wouldn't go that far ahead). As I said I'll wait until it hits home release or at least until PSN puts it up for digital rental as I have no intention of seeing this in the theater. Even though it's getting good reviews from movie goers I still hold reservations that they fucked something up that will piss me off (then again I did enjoy the GitS movie for what it was even if I hate what it'd did to Motoko as a character).
XD, a live-action Shining Finger might literally make me vomit blood.