Every rank system should be beneficial for really good players. I am talking in general not by names nor myself. The game really doesn't have player pool so, your ranking will be for nothing because you will not match up with your same rank opponent. Even though you are Conqueror rank, your teammates or your enemy will be bronze 1. Therefore, I believe If they bring this rank system it will be very good. Although every system has some exploit or abusing innit, you can't really find the best one which doesn't have any abuse or exploit. We shouldn't be the perfectionist about this system even tho I got your point and its reasonable.We have had a lot of discussions about performance rewards while making HINQ MM. Basically, it feels fair to reward performance but in a team-based game if done bluntly like your suggestions only makes your experience worse. I know, that you are one of the best archers so the system benefits you very well but there are tons of players who will try to abuse mechanics and classes to keep up with you. Basic +25 -25 works just fine - the point of ELO is to create the best possible matchups so everyone's WR should be 50% in a perfect scenario. It's just that Koso would have 50% and 5k and Death would have 50% on 2k.
In the last season, we added a performance factor for calibration and I think it worked really well and allowed us to place players close to their actual rankings pretty fast. So something like this might be used during calibration but I'd heavily propose not to use it after calibration.