I apologize if any of the following ideas have already been postulated/discussed at length before; I've been through the boards fairly thoroughly, and haven't seen anyone else offer them.
1) Ben Horne was meant for great things.
Everytime Ben tries to do something bad, it ultimately ends up backfiring; something seems to want to keep blood off of his hands:
A) Andrew Packard found out about the plan to kill him and faked his own death.
B) Leo Johnson and Catherine both survived Ben's attempts to have them killed.
C) Hank was caught by Jean Renault before he could kill Cooper/interfere in Audrey's rescue.
Someone on the IMDB message boards had the idea that the Great Northern would play an important role in the Lodge story arcs: The appearance of Bob and MFAP there after Josie's death is unique in the series. This person's idea went that the Great Northern could act as a kind of lure/homing beacon for Black/White Lodge spirits, and possibly be used to trap them (taking into account Josie's imprisonment in the wood). If this holds any water, then someone had to give the Hotel this power... I don't think that Ben's home movies of his dad were simply put in the show to demonstrate how far Ben had fallen. I think it's possible that Ben's dad knew about the Lodges, and was an agent for the White Lodge-- and that Ben was ultimately fated to follow in his footsteps.
2) Hank was possessed.
Sheriff Truman tells us that he and Hank were once good friends, and that Hank was one of the best of the Bookhouse Boys. We're never given an answer as to what spurred him to become a creepy hick killer-for-hire. However, in the show, we do see several glimpses of otherwise good people becoming bad without apparent reason-- and it always involved the Lodges.