I feel like JakaB here...what is the point of this thread? All designers have their merits/demerits and how can you possibly say that any of us are unbiased in our opinions and how can we each attempt to pick JUST ONE?
I play a Tillie almost every day yet I love the Doaks, some Dye's, a long lost Raynor that's coming back to life and some other randoms. Hell, I can even think of an Ault that I like. Sorry, maybe I'm the inconsistent player who just likes the right feel at the right time. After all, there are plenty of good looking fish in the sea.