Big post warning.
Froggy, instead of punishing players for leaving a game THEY ARE NOT ENJOYING, why not implement a proper ranking system? That way you KNOW you aren't gonna be playing against noobs. This should be more important than punishing players who do get stuck with a team who has no idea and get squished.
Seriously stop blaming players for a GPG game design flaw. No-one will play a game they dont enjoy, and if you punish them for feeling this way all you are doing is further alienating your customers. Which means less people playing which means less moneys for you. wow.
To prove my point here is an example:
A few nights ago I host a 3v3. 5 others join, cool.
I ask: 'Before we start, can I ask who is a new player?' both guys on my team say they only have a little online experience. Which is cool I dont' mind helping new players learn. I say 'Ok that's cool then, I'll help you guys learn how to play, just try to follow my advice'. Response: 'Ok no probs'.
Me: 'Guys try and stick together and back each other up, don't wander off or you'll get ganked'
Them: 'ok' 'ok'
Me: 'Guys why are you both running off, please cap the flag you are standing right next to.'
Then: no response....
A few mins pass.
Me: 'Guys wtf are you doing stop running into all three of them you can't win you'll just die'
Them: .... no response ...
SMITER, WRATHFUL etc.
Me: 'Ok fuck it. Do what ever you want, you have fed them too much already'
Them: still no response.
So I ran at enemy base, died and then went to do some washing... I came back 5 mins later just as the enemy finished off our citadel.
Now Frogboy, tell me how it was unfair for me to not keep playing? I didn't actually quit but I may as well have. I asked these guys from the start if they were new, then I tried to offer them help all through out the game. In the end they just ignored me, fed the enemy and didn't cap any flags, even after I advised them what to do several times.
So with your new system, if I had have actually quit, I'd be punished. Punished for a. identifying new players. b. trying to help new players and c. for losing paitence for 2 people who didn't want to either listen or learn how NOT to ruin other players games.
In a fair would THEY would be punished not me.
How about instead of this badly thought out proposal you have put forward for rage quitters you look at a ranking system. This way I'd not have had to deal with new players at all and then if new players don't want to learn how to play properly and just want to screw around they can, noone loses.
In closing, your proposed system is unfair, unreasonable and will only hurt the community even more so. I am your customer, I don't owe you anything, that includes sitting in a 20 min game while my team who I tried to help gets curb stomped because they aren't willing to learn.