Do you even vi? Remove everything! Here's a link to the pic of the keyboard for which vi was originally designed on:
http://vintagecomputer.ca/wp-content/uploads/2015/01/LSI-ADM...
I completely agree with your post. Removing the home/end & function keys is such a waste given the amount of free space for keys on every single notebook ever made.
edit: I realized I hadn't taken my initial argument to complete absurdity, "Apple Introduces Revolutionary New Laptop With No Keyboard":