The Demon Released From Within

Imagine if Dipper was the one to loose his memories and then get them back instead of Stan. Imagine if Bill was never fully killed. Imagine if Bill was still living inside of Dipper. Imagine if a new person comes to Gravity Falls and shakes the statues hand. What will happen to Dipper when Bill is released? Will Bill go back to his demonic ways and try to take over the world? Or will he fall for the human he once tried to kill 7 years ago?