I haven't had to use xkill in so long I'd forgotten it even existed until you just brought it up.
What I'd want is the option to have several types of trackpads available when you order a laptop. One with buttons on bottom and top (for the trackpoint); one larger with buttons only at the bottom (that's what I prefer); and one larger still, clickable but with no buttons (my wife has that and I hate it, the mouse moves every time you click and right-clicks are hit or miss).
I'm just surprised they haven't yet found a way to render the entire surface below the keyboard as some kind of trackpad, with detection when you use the keyboard.
The only negative is that there is less revenue for the city through billboard taxes, hence more taxes for the rest of us.
Earth is a beta site.