As a Roblox developer on Mac, it is currently impossible to quickly open and modify a decent amount of different scripts due to the fact they always open in main window. This then means in order to edit them we have to drag them into another window, which is a painful, and honestly extremely slow process. If we were able to set the window in which scripts open in then this problem would be completely eradicated and I would be able to efficiently edit multiple scripts at once.
It would also be a viable option if the game searches for which windows are already containing scripts and simply added the new script into that window.