The original Clicker aimed more at being small than being usable. it was based around 50 buttons, and had an arrangement based on the planck 40% layout. with the new screen being wider, that gives us more space for buttons, and even with a slight bump in size, you can fit 80 keys into the space below the screen

With a bit of sniffing around at keyboard layouts, it becomes clear that 80 keys is a nice number. if you take a standard 'tenless' keyboard layout (with the numberpad whipped off) that uses 88 keys

the top row can be moved onto key modifiers, so a simple fn key and the standard number keys can work for the F keys. That saves 16 keys from the off, and we now have 8 too many :)

Now to fit and format them in a more sensible way........