I'm not really one for PBTA games usually, but I really like this one. It's great for soloing and I like the idea of creating one word "skills". I also love the humor woven in throughout the game. I also like how easily extensible this is, for example, I can see myself extending the heist table to include some more abstract stuff, how about stealing someone's "heart"? Or stealing someone's "thunder"! The possibilities are great.
Adding on to Kinayla's comment, I like the idea of accumulating masks over the course of a longer session and multiple heists maybe? That'd be awesome.