My predictions for the finale.... (Possible Spoilers so be advised)
Ok Then......
I know for sure that Levi gets shunned. Probably for porking that "mystery English" babe.
Devil Dougie packs up a semi and heads out of Lancaster once and for all, after somebody* blows up his trailer. You can pretty figure out who did that, but if you don't, I can say that it is the "last man standing" after Levi gets his ass demoted out of Amish Aid. I can tell you that he is still pissed about his chicken coops, and promised his girlfriend that he wouldn't go to prison anymore.
Now that Levi had his butt tossed out of Amish aid, he needs some source of income, so he writes "Amish Confidential", and Discovery Channel devotes a whole hour as a follow-up to the conclusion of Amish Mafia. Now, why would Discovery allow an hour of national television for Levi to plug his book? Because I don't believe for a minute that they are not going to continue this series, in some sort or another.
You can either love or hate this show, but it doesn't matter to them. It's one of their highest rated shows, and when it comes to television, ratings are all that matters. According to some sources, tourism in Amish Country is at an all time high. You can argue that Amish Mafia had something to do with that, and don't let anybody bull $h*t you. The Amish don't care one way or the other how this show portrays them. The ones that I talked to actually seemed amused by the lunacy of it.
All that being said: Alan Beiler steps up to fill the power vacuum left by Levi's shunning, and as I said before, He was the driving force behind Amish Mafia before anybody knew about Amish Mafia. Now that he has the inside line with the Discovery Channel, there is no way that this bunch is just going to fade away. There is way too much money to be made, and I wouldn't be surprised that it continues in one form or another. They could come up with all kinds of storylines to last another 3 or 4 seasons.
Hell....I could come up with a bunch of them on my own, as I am sure that you could as well, and perhaps the producers can make TV history by soliciting plot lines form their audience.
Then again, I could be wrong about all of the above.