A lot of games seem to want to mash together features from different genres. Sometimes this works well, other times, not so much. Adding puzzles to a first person shooter would not work too well, I think
Anyway, I was thinking about this the other day and looked at the genres I like and started wondering what fun game could incorporate. There are 2 genres I'd like to see mashed together: 4X and Open World Roleplaying. I think Fallout 4 may have some elements from both, but have not played it yet.
Resource management and "eXplore, eXterminate, eXpand, and eXploit" from the 4X genre for truly building a home or base combined with the quests, stories, exploration, and character development from RPGs would be my idea of a game that I could play for years on end. I'm not sure how combat would work, though, as there would be singular combat and group/army combat.
Anyway, what genres would you like to see "mashed together?" Have you found any games that mashed genres that you've enjoyed?