The "hey everyone lets just dodge" vote is exactly what it will be. You can call what you want, you can have all of the best of intentions for it but the reality is that it won't be used for that. It's like riot created Sightstone for the purpose of giving supports a means of not having to spend all their money on wards and yet Lee Sin runs all over the map with it wrecking people, and there really isn't a logical means for riot to prevent that.
This would be the same thing. You can have the best of intentions for a system like this, to punish players who are toxic from the start, to prevent trolls from ruining a game, and to some of the extent it may get used for that, but at the end of the day the primary way it would be used would be to stop games when you get out picked/banned, by 4 man premades who don't like their 5th, and other trolly bullcrap. We saw it in HoN and there is zero reason to believe it would be used in another way.
Understand this, it takes 2 people to tango. There might be the occasional person who only wants to troll people for the same of trolling people, but those are very few, more than likely what the problem is, is that you have 2 people who each want the same thing and instead of communicating, and working things out between then they want to devolve it into a "I want it, no I want it" shouting match like toddlers. You know how I dealt with seeing someone in champ select say "mid or feed?" I shrugged and said "k fill" and just moved along with life. Wouldn't you know it they took mid, many times they stomped, and I supported/jungled/topped/adc and did my part and I climbed the ladder. There are several roles and several ways of enjoying this game if you are so tied to 1 spot that it is worth fighting with someone over it and creating a toxic situation in your team before the game even begins than yeah I'm gonna say the problem is you.
@Its Spongebob, no the good doesn't out weight the bad. If that was true HoN wouldn't of removed the exact same system from their game due to how it was abused. You are not looking beyond your own issues to see the problems with this system and why it fails.