What hasn't been tried to make support more desirable to play?

What if removing them from wanting to stay only with the marksmen made it more enjoyable?

What if being at the mercy of if your marksmen is good or not makes a lot of people not want to play support.

What if you could focus more on mid and top lane instead if you think you will have better results in doing so and people actually though it was a good idea?

Why not free them up and make them into far more of a roaming class that benefits from assists which give exp and being near higher level allies gives passive EXP instead of protecting the class that is always entitled to being seen as mandatory?

What if doing these things exposed weaknesses of a class always seen as mandatory to the point where they were no longer always seen as mandatory but still optional?

What if you were to free the meta from the support + marksmen lane?

What if you were to remove the shared EXP increase meaning that sharing a lane for an extended period of time would likely result in the solo getting to level 6 before the duo got to level 5 meaning that there is a real tradeoff for the early game pressure?

What if being stuck as the marksmen's "wing man" is the reason why so many don't want to play support?