How in the hell would April being the Turtles' sister work? How or why is it remotely acceptable to have April and her father be tied to the Turtles ala possibly having her father be none other than Splinter?
That's what I have a problem with. The whole thought of both ideas makes me cringe. I'm not against the scroll showing that ancient creatures defeated the Shredder's army years ago and now years later Oroku Saki has taken up the mask and armor in honor of his ancestral blood and wants to turn the Foot Clan into a better, stronger force, but having a white man obsessed with the culture let alone being involved in the Turtles origin along with many other things that bug me with the route they are going with this film is like having too many cooks in the kitchen adding too many ingredients into the pot.
It's not rocket science to tell the TMNT's origin story as it was written or follow the source material but then again with Bay and Liebsman, we were never really given rocket scientists....