Gravity (which is Newtonian Gravity, right?) display isn't working. I turned it on, the display stayed on OFF. Other than that, very nice and very good. Maybe you should add an air pressure/velocity on/off display, if possible?
if gravity not worked, then its TPT's problems, try turn on gravity, then Cut and paste it in other place EDIT: pressure? i will try, EDIT2: ooh! Vine mode!