I've tried a lot of themes, and many haven't worked out. The most successful have been the ones where:
1) I was able to give them the space they deserved. (The design space of a draft set is much smaller than many people give it credit for. Only so many themes can be successfully pushed concurrently)
2) Are well integrated an layered with a variety of different strategies (e.g. we see multiple different types of decks using sacrifice effects each draft, and different configurations from week to week)
I think these two concepts are very well demonstrated in Wizards' products. When they go for something, they overload the set with layered ways to interact with and against that idea or mechanic. Making "the ___ deck" work in a cube is another matter. Often the answer is to push much much harder on that idea. To this end, I think CML's mill theme could have worked (or some variant thereof), but it would require a much greater dedication from his whole design.
1) I was able to give them the space they deserved. (The design space of a draft set is much smaller than many people give it credit for. Only so many themes can be successfully pushed concurrently)
2) Are well integrated an layered with a variety of different strategies (e.g. we see multiple different types of decks using sacrifice effects each draft, and different configurations from week to week)
I think these two concepts are very well demonstrated in Wizards' products. When they go for something, they overload the set with layered ways to interact with and against that idea or mechanic. Making "the ___ deck" work in a cube is another matter. Often the answer is to push much much harder on that idea. To this end, I think CML's mill theme could have worked (or some variant thereof), but it would require a much greater dedication from his whole design.