Ranked matches in the "Higher Rank Festival"

Alter is extremely easy to deal with though. I see people rat and camp bad Alter Nexus placements in Diamond 3 ALL THE TIME! So it's not even true. 
It's more often the case that Alters are incompetent and place Nexus where enemy teams will rotate through and clearly SEE the nexus and camp it. 
In diamond 3 it's a LIABILITY to even use Alter Nexus. 50% of the time and I'm not even joking, my teammate will take other randoms nexus mid fight and die on nexus instantly. 

So no. Alter requires skill and game sense to actually understand where you can even place a nexus that will be useful. 
I even have several Alters in Diamond 3 who place the nexus too far away. They go to a fight. The fight is outside the range of their nexus that they just placed pre fight. And they could have saved the game with it but didn't understand not to place the nexus too far away XD 

Alter is not a problem at all. Her balancing is extremely good imo. Because when a character is ONLY good in barely 10% of the players hands, then you know that it takes skill and IQ to play it correctly. 
It's when a character is good in 90% of players hands REGARDLESS OF SKILL that you can say maybe they are OP. 

A character I would have guessed is OP is Valkyrie, but even with her buffs she still regularly gets nuked out of the air easily. The balancing is pretty good right now IMO. Nobody is really too strong. The top Horizon or Octane players can outskill almost any legend, but that's gunplay skills and movement skills, 97% of Octane Horizon players can't do that XD