I'm fixing the keyboard controls right now and came up with this layout:
Before bashing it, here are some things to consider.
There's a limit to the number of keys you can hold at the same time and it's different for every keyboard. Let's say you're in the air. You're probably varying between either the left/right and up/down arrow keys. You might replace one of the arrow keys with a lincoln key. You're also grabbing so that's an extra key. 2 if you're tweaking the grab. That's 4 keys. The max on my keyboard is 4-5 depending on which keys are being pressed. It has to do with the way the circuits are arranged on your keyboard.
The modifier keys (Shift, CTRL, Command etc) combined with other keys do different things depending on your OS. I want to find a solution that works for everyone so the layout I made doesn't have them anymore.
Keys that go together can't be placed far away from each other.