It's still a concern everyone would always have to think about whenever a function uses coordinates. And to be consistent, anyone writing a helper function would have to implement both local and global coordinates, too. Because otherwise, there would be *three* possible coordinate system: Local, global and the "local or global depending on state".

It's just that: Added complexity. It's also the reason I wouldn't mind just making all coordinates global. The onlky reason I can think of that local coordinates are useful is e.g. in functions like CastObjects, where you can just leave out the coordinate parameters to create stuff at object center.