This is a great idea and is exactly what I joined this forum to suggest.
How do we get feedback on whether an idea or suggestion will be adopted or incorporated into the app?
I actually came here to request the same thing. I just got an Iconia A500 for xmas and thought it would be a great addition. I love this keyboard on my phone and it is the only one i plan to use for the forseeable future, but it didnt look so good on my tablet. I just tried messing with settings though, if you turn up the key height to about 65%, it's about the right size for a tablet screen, although there's no option for a number row. Still usable though.