A lot of people had difficulty reading the thin fonts of betas 1 and 2, and a lot of people complained about it. Happily, Apple listened and thickened the fonts slightly in beta 3. They also gave us the option of making them even thicker by selecting "bold text" in Settings. This was a welcome change for me, and for many others. But, predictably, there were a lot of people who preferred the thinner font, which, admittedly, looked pretty cool, even if it was a strain on the eyes. So, why not just add a three-way switch in Settings that would let us select between "thin," "normal" and "bold"? That way, everybody would be happy!