1.If change a race in reboot style setting is anything more than minor annoyance you need to check yourself mirror
2.They are tons of minorities character they are used,I am not favor changing every character but until the barrier gets clearly broken these moves need to happen some time. Rodriguez didn't know their was female latina green lantern character.She complained when they were asking her to be very thing she would want a original character.
I will simply end with this when i see the Avengers movie poster it same feeling i guess you get when they change race of character.Sticking Latino, Asian or Black character doesn't make it better (yes i know Fury is on extended poster ) but i don't know to solve issue nicely that makes everyone happy
A.Take out old character for new one people get mad? ala Cyborg
B. You use Legacy character like John Stewart ,Jessica cruz, or Simon Baaz people get mad because Hal Jordan is one in the stories
C.You change the race so you keep the original character trying to add diversity but keeping original character .People get mad.
D.You leave things as is you leave clear probelm in place.