DLC KILLERS
Add an option to play a ranked game only vs FREE DLC characters since you suffer from not knowing perks/abilities/add-ons /offerings of that killer if you didn't buy killers like Shape, Huntress etc. Which gives the killer an unfair advantage if the survivor is unfamiliar with that killer.
Comments
As I was saying it would be an option, therefore improved matchmaking And I don;t consider watching youtube to learn everything about a killer/survivor to be a part of my game-play experience. Since you should be learning in game based on the data the game gives you.
You can look those perks up on the DBD wiki, problem solved