(this comment will be long so you have been warned) I think that Gravity Falls doesn't really need a 3rd season because Alex has said many times that there will not be one, sure we all miss it and so do i. I mean the fandom made goddamn Billdip and Pinesct, and we got a pretty good ending. And if anyone brings up Bills last words, in the spinoff series book, it says "One way to absolve his crime, A different form a different time." This line is in relation with Bill and his crimes, and A different form a different time means that in the first season or something like that, Bill was in somebody. A theory says that he was with Stanly since, how could he have known the "Eenie, meenie, minnie, YOU" thing since only Bill knows that? It could have been anyone really. And if you really need this closure, make a fanficton, make headcanon characters, draw everyone in the show, or make friends with GF fans. What I'm really trying to say is that we don't need a 3rd season, but i really wish we had one. I will probaly not do another super long comment like this again so.. We'll meet again~ don't know were, when~ But I'm sure we'll meet again some Sunny Dayy~