The screen size is perfect and the resolution is a good balance between clarity and efficiency in battery life.
I would only change one thing.
= More robust keyboard.
Maybe make the keyboard sealed so that it is more resistant to dust and water drops.
Other than that, if anyone suggests "faster CPU" or "more memory", it is going to come at the cost of decreased battery life. Considering that the current Q10 is already quick enough, I do not want to sacrifice battery life for a marginally better performance.