I'll answer what I have an answer for
:
the "Go to page" feature already uses a numeric keypad appearing "on the fly" in the older models, and it goes fast enough for me. If you need it very often, you can tweak one button to allow you direct access to that feature.
The Wacom touch screen doesn't worsen the screen quality. However, you can't use it with your fingers, but you need the stylus to make it work.