1. Yes, a diverse skill set is useful.
  2. Yes though I would also like to see tutorials covering classes of techniques rather than step-by-step processes.
  3. 8 out of 10, assuming 10 is highest.

I dislike designs that focus solely on visual appeal. It is important to be visually appealing but not if you sacrifice usability and functionality in the process. I favor minimalist designs with large fonts that try to keep tasks as simple as possible. I don't like "kitchen sink" (as if everything but) or "power user" designs. I am also leery of any design that purports to be "intuitive," because usually the ones that say they are are not.