I give my breeding and friend safari leftovers to wonder trade. If I get junk pokemon (which is most of the time) I just release them. I figure the wonder trade system is just what you put in it. It just is what it is when people act selfishly by continually throwing common pokemon in the system and take the good ones out. Not saying it is right or wrong or this is what you should or shouldn't do, just that if you like receiving cool stuff from wonder trade then you should encourage people to continue to put them in there by doing the same yourself.
Pokemon X Friend Code: 5086-2806-5501
IGN: Abaddon
Friend Safari Type is Flying: Swanna, Tropius, and Spearow.