I've already set the option in the config file to the non-default behavior as that is how I normally prefer to pilot ships.
However, I would LOVE it if the option to toggle this on or off with a button was implemented in game.
Primarily due to my desire to pilot different ships with a different setup.
For ship with primarily front facing weapons I love the non-default control setup.
For ships with all broadside turrets, I can't fly those at all unless I use the 'original' control method.
So, I have to choose one or the other for the moment. Even with an option in game that I could turn off or on, it'd still be a bit tedious having to go into the options menu before/during each battle depending on what flagship I am using.
So, I would ask you to consider possibly making the 'shift' key function as a toggle, on another key perhaps? I still like the way shift works and I wouldn't want that taken away ever.
I did try binding the 'shift' key function to caps lock a week ago or so, but, it does not function as a toggle. It works just like the shift key except you must now hold down caps lock.
Anyway, just wanted to add my thought on this. If you decide not to add a toggle it's not a deal breaker for me, I can just stick with the ships that have forward facing weapons, lol.