Wouldn't it be possible to have a side add-on similar to the numeric keypad but the width of the spacer or LED matrix to accomplish this? Maybe a revamped keypa

Wouldn't it be possible to have a side add-on similar to the numeric keypad but the width of the spacer or LED matrix to accomplish this? Maybe a revamped keypad that has home, end, page up, page down, and then a bunch of assignable macro keys would work well.