I'd also say this. The technical aspect of a game compared to the actual game design is a very different sort of problem. Specifically with Minecraft you could design a game using mods like Create.
For inspiration I would point to the creator TangoTek. Over the past year he designed a deck building dungeon crawler in vanilla-ish Minecraft using redstone. It's a great series to see how you can design a game in almost any environment.
