i think you should be able to choose what level of players can enter in a specific game of killers for example 800 to 1000. Any thoughts

If you do that and you want 10 players it would take a very long time before the game starts

its like the normal ranked games so it would be optional

i know what your talking about, but what if you create a 800+ killer with 10 players and only 20 people who are over 800 are online but 12 are in other games and tourno, you won't fill the 2 empty spaces fast and others in your game just leave

While you are correct, this is entirely irrelevant to the suggestion jack.

Just like for any other game type, it would be the game creator's problem if you create a game that's not realistically going to fill...

Just like it's up to each and every player to consider for themselves whether they consider a game feasible and consequentially whether or not to join it.

I don't mind keeping killer a tad more casual than the other game types, but I don't see any good reason why not implement this option either. It would mean an even harder time for high rank players to get games, but that's really nothing new anyway - players already have the means to avoid playing high ranked opponents if they wish.