I haven’t went through every page, but, I’m going to throw in my two cents…
I feel you should continue with whatever you promised with your expansion. Changing direction after advertising it is a bitter pill to swallow for most. It will haunt your games for years —customers won’t forget; customers are relentless.
Currently, World of Warcraft is suffering from making this mistake with Warlords of Draenor. People are upset that they had so much planned, yet so much was left out. Customers are having trouble trusting Blizzard with their next expansion: Legion.
When you take this route, you ultimately hurt yourself more than help yourself. Do NOT skimp on what is advertised for your game/expansion. It will bite you, it will follow you wherever you go…