It's nice to see a company trying to make a reward system for helpful respectful decent players in this kinda game, I can tell you, DotA2 has a kinda system like that sorta, you can commend other players, and it allows you to see if a person is bein helpful or nice or whatever, but people almost never bother with it... hell most of the time the only thing I ever got outa the DotA2 community, is the laughs at how easy it is to get some of those idiots to shut up using creative responses that serve to both insult and confuse people... Like when someone calls me out as a ****** or tells me I'm all butt buddies with a team mate because I helped them gank the fuck outa their entire losing team, I usually come back with "Better gay than retarded." I'm not gay, but I also don't consider it an insult, especially if you "hafta be gay" to play in a coordinated or team friendly way, cuz if that's a sign of being gay, then obviously if it helps you kick ass and win, how is that a bad thing... heh... also funny when people call you out for being cheap because you play a character they don't know how to counter, or call you out for being cheap as a support hero for saving your teams ass during a team fight... hint, it's kinda your job to keep your team mates alive and help em out during team fights.
Whether or not it fucks up their game(if it does they'll fix it somehow) or not, it's still a cool thing to try.