As my title says why would the blood elves even want her when she returns.
She was part of the alliance of lorderon that turned its back on them when they need help the most.
it was Garithos and the alliance of lorderon that imprisoned their leader kal and made him make an alliance with naga just to survive.
Everyone likes to point out in all the forums how loyal she is is to the alliance so why would to Blood elves want a person that is loyal to the very group that betrayed them back at all?
I have nothing against Alleria and think if she comes back she will try to med fences but all elves, be they night elves, high elves, or blood elves are a pretty stubborn bunch.
On the whole what will she think of the dark lady argument because i know it will be brought up. She can love and respect her sister for dying to save their home but does not have to like the fact that her sister was raised into undeath. Had Alleria been there she would prob have died right along with sylanas and been raised as well. Not off hiding in the human world.