Easier to balance the game when you know for a fact there's no multiples of a hero
More diversity
More strategic. Current tournament play (and soon competitive play because team composition always trickles down and gets copied by the plebs) is all about double Lucio, McCree, Winston, Tracer, and teams don't counter it because it isn't counterable, like watch the matches from last night and double Winston will be played for the whole round because if you counter him you'll just be making your team weaker to something else. Not all tournaments are limiting heroes and they aren't as fun to watch.
Not fun playing against double of certain characters (Winston and Tracer for me)
More diversity
More strategic. Current tournament play (and soon competitive play because team composition always trickles down and gets copied by the plebs) is all about double Lucio, McCree, Winston, Tracer, and teams don't counter it because it isn't counterable, like watch the matches from last night and double Winston will be played for the whole round because if you counter him you'll just be making your team weaker to something else. Not all tournaments are limiting heroes and they aren't as fun to watch.
Not fun playing against double of certain characters (Winston and Tracer for me)