" However, I think that, if they were just going to take advantage of us, they would have just continued to create new expansions. "
I will never understand this thinking. Until Oblivaeon, their expansions hadn't been trolls or cash grabs... they added awesome new elements and characters and a rich experience. Them choosing to end the story... cool, their choice. But to keep printing expansions would have been a service to fans as long as the gameplay stayed good.
Revising the rules and asking people to pony back up... that's not the same as printing expansion content for people who already gave them 400+