Originally Posted by
Tziva
Yeah, I remember that but that's a different thing. This feature actually does exist, just apparently is accessed in different places depending on whether you're in or outside a match with them. This isn't a true ignore, this just prevents you from getting grouped with a particular player on your team, but they can still be on the other team, and you're only allowed to put a few people on it at a time.
In match, if you right-click them on the game roster, where is "avoid this teammate" option on the drop down. Apparently after game you need to go into the social recent-players menu to do the same. But it is an option!
Mute/block also work if you don't want to hear them prattle on about whatever, but you'll still end up grouped with them if you just use that.
But yes as you said, there's no true ignore where you won't ever see that player again at all, for the reasons you mentioned.