1) - In the Dial Pad when you are typing
a number you can insert/paste at any position a desired
number.
2) - In the Contacts and Call Log you
can search by phone number too.
3) - You can customize the colors and
shape of the 4x1 widget with the Speed Dial, Contacts, Dial Pad and
Call Log buttons. In the Speed Dial app go to Settings/Widget
(4x1).