Hey there. This could be a dumb question, since i don't understand if there is a reason behind it.
But is it really a strict limit that tiled objects are rectangles? Could it be at all possible for them to be "transformable", similar to how we can move around, add, and delete the points on a collision polygon?
The most basic use of this would be filling up an area without having to use several instances of the tiled objects. when up against a shape that isn't a flat line. (like in the attached img) it would be a lot simpler if the tile object could be freely transformed into an "organic" polygon =)