You know what... it's not that bad!
When the theme was first announced, I had absolutely no idea where to go with it. Every idea I came up with seemed to require more art assets than World of Warcraft.
Now, after burying a day into my little game - I actually think it's not a bad theme. Seeing some of the craziness on Twitter is good, too. Just saw a dude making a "Card-based Racing Game" where you draw cards from your deck to steer... Now, that's a genre I never knew I needed!!!
As for me, I'm making a mathematics-based FPS.
Hope you're all having a good time so far!