Interesting, yeah those are good points. I can certainly see it reducing the severity of disputes in theory.

In practice though I'm skeptical. I've read a little about the history of UAW. They really seemed to view workers vs mgmt as an adversarial zero sum game. Meanwhile Toyota were developing their production system using the kaizen principle of bottom up continuous improvement. Unions played a huge role in making US autos uncompetitive against the Japanese brands for a long time.

I want to be pro-union but it's hard when you observe their real world behaviour. All too often they slowly strangle their company, making it less and less competitive and innovative and ultimately dooming it to defeat by new entrants who aren't yet encumbered by unions.