This is unexpected but very appreciative feature. I use the fps counter for everything. I love it's simplicity and it's not over the top in your face with bold colors. If they can replicate that or allow people to adjust it's visuals I'd definitely aim for that.
While I agree, I'd rather have more efficient cores than less efficient. More cores will consume more power and increases complexity for programming and we still have games for example that are hardly multi threaded. Of course not everything is about gaming.