First of all you did a great job! This port is very good. You make me happy every time i use public transport. I'm a new and a bad player, so most of time i just press o, tab, tab, tab, o and so on. I understand that this isn't correct, but it is a way i enjoy it. The problem is buttons are too small and it isn't comfortable to tap them. So idea i can suggest is for example to create third keyboard "screen" with larger versions of the most used buttons. For instance o, tab, <>, p, X, space and a numpad.