YES! This page is full of amazing ideas which I cannot wait for ranked to be introduced for this game. I already have a party of four and have tested play styles and teamwork.
First of all kudos to everyone here being involved and making a difference. Let's keep the community big and positive vibes all around.
My thoughts towards a ranking system involves roles. Of course kills and objectives should be counted towards skill as well as participation kills. My idea is to implement bonus rank points for out playing as your role such as Tank, Healer, DPS, Support. In this way even if you still lose you are granted bonus points for reaching goals in your role every game that way gamers aren't playing a tank character and just goes straight damage mods. I agree on keeping mods of three only because it gives you just enough options to play your role not multiple roles.
Ultimately, lets keep rank team based and not one person dominating the game and stealing all the rank points but instead gaining a ton of bonus points for playing well as that role.