Need them, no?
What the leagues and football in general need to do is educate the fans on what the rules of the game actually are.
Every fan forum is poisoned with idiots who think that because some marginal call went against them, and a similar marginal call in another match went another way, there is a conspiracy against their team.
They then proceed to ignore all the marginal calls that went their way, because that goes against their narrative that the refs are out to get them.
This is being fuelled by managers who understand the importance of an us against them mentality.
VAR needs some tweaking, and it needs consistency in its application across Europe.
Why is Madrid not an option?