You can outright make support the most impactful role in the game, and it will still be unpopular
So please stop pandering to people with mindsets that inherently don't mesh with the role because it feel like you're seriously fucking it up for actual support mains.
There were numerous points in season 6 and 7 where the support role was legitimately broken, but people still wouldn't play it. At some point it has to be accepted that no matter how you screw with the game, at least one role has to be the least popular. If you prop up supports enough that a ton of people play it, people will just bitch and complain about getting whatever the 2nd least popular role is.