I would love to see more story driven expansions for Eldritch Horror. Most of the encounters and story elements are more or less random in EH and don't form an overarching storyline, so they could make POD expansions / scenarios which include new decks for locations with events that are directly tied to those scenarios. Research encounters cards could reveal new parts of the story and lead the players towards the correct locations and events and Mythos cards would drive the game towards investigator's loss if they're not progressing fast enough.
They could also introduce a separate deck with numbered cards so encounter/Mythos/research cards could reference those cards and have different outcomes if the investigator’s have the correct items or certain Mysteries solved. This way the outcomes wouldn't be spoiled before the investigator's meet the requirements.
I’m sure all this could be easily incorporated to Eldritch Horror with current mechanics and give the game a totally different feeling. At least I would happily buy them even if they wouldn’t have as much replay value as normal EH expansions.
Edited by Masaiko