While the reputation system is really helpful creating an automatic moderation and hierarchy, it also often appeals very rewarding to the human brain to see those numbers going up and gaining more freedom and power on the site. In this system it is obviosly necessary that it's easier to gain reputation than to lose it. Therefore, upvotes gain more reputation than downvotes cost.
In my opinion, this highly rewards controversial answers with often strong opinions, which get a lot of upvotes and downwotes. While such answers often aren't of high quality, they tend to award their authors with privileges. In my case, not my answers with high quality but rather the mediocre ones are those which gave me the most reputation, due to their controversional tendencies.
So my question is: should (if it's possible) the reputation system be changed to prevent this? (for example, only rewarding reputation for the combined value of up- and downvotes)