Champion Mastery leveling

When are you guys going to add this to ARAM game modes. The reason I ask is not all of us like to play TOXIC RIFT. I have been playing since the middle of season 1. I now avoid Toxic rift at all cost due to people with negative attitudes etc. I tend to call Summoners Rift Toxic rift. Yes I know its not very nice but due to the players you have to deal with now opposed to back in Season 1.2.3. Yes I have been playing since it was released. I have taken breaks but have always come back to LoL.

I understand some will comment about the toxicity of Summoners rift. But the fact is I avoid it due to these reasons. Not to mention the games take way to long. Where as Howling Abyss takes less time I feel some changes need to be made to Howiling Abyss as well. For starters Should be unavalible for Aram/Howling Abyss unless the Mastery system for champions in added. As these champions are too strong for this game mode an result in a WIN just for getting the champion during Champion select. As well as needs to be removed from Howilng Abyss since was removed from Summoners. Also using is a cheap shot in Aram games because TRUE DAMAGE is Overpowered.

P.S. we should have the option of Howling Abyss or Summoners rift for Aram. Since Aram games is 100% skill an teamwork. Also I have asked several times during and after games how many would play a Summoners aram. Shocking result was People agreed with the idea an said they would love for that to happen.