First mate I tried Freeworlds and its not like you think. The ships turn very very slow and so if you are in normal flight you ship sometimes get out of the screen. You cant sit in turret view and controll you ship. Second if you look at the bottom of your video there is the whole time Mouse flight and not turret view like it should be.
Sorry to destroy your dream but its not able to do the 2 things at the same time in Freeworlds.