Of course it made the game matter more. Heck it affected voting. Fans would vote for the best players in their league then for mediocre talent in the other.
That they wanted to win the All Star game was always silly. It was always a meaningless exhibition. If the game gets too competitive, teams start holding out on bigger (re: more expensive) star players because, why risk injury?
Just because some players didn’t have an Off Switch didn’t make the game better. I enjoyed the fun. I enjoyed moments like Barry Bonds charging out to centerfield to carry off Torii Hunter after the latter robbed him of a home run. I enjoyed watching players clamor up the dugout steps to watch Aroldis Chapman throw 102 MPH or better on every pitch, and pitying the teammate at the plate.. I enjoyed watching ARod cede the shortstop position to Cal Ripken one last time. And Chan Ho Park straight up grooving Cal a fastball down the middle just because, well, respect.
Watching Rose slam Ray Fosse out of the league was a lowlight, not a highlight…