Hi,
Not sure if this feature requesr makes sense for this OS, but its something that's bugged me in every other OS.

On most OS's the higher level keyboard API supports repeating the last key pressed if you hold down keys, the last one repeats.

So if you hold down A and B you will get something like ABBBBB or UP and RIGHT Up, Right, Right, Right.

It would be good if there was a buffer and they were played back in order.

So the examples:.
ABABABAB
Up, Right, Up, Right, Up Right.

As you let go of keys they would be removed from the buffer.

For people beginners writing simple games it would be handy as they wouldn't have to deal with keyup/key down events until later (if at all).

Lots of simple programs that only provide scrolling horizontally and vertically from the keyboard would gain diagonal scrolling for free (this is the big feature).