I ought to be clear about what I have planned for Carol now then because I think it'll make it easier for whoever ends up getting Kyle. My first arc with Carol will involve her and Sinestro going to the Negative Zone whereby after a time they are presumed dead because they cannot be contacted. This could possibly facilitate the entrance of another human-based Green Lantern because ideally up to that point Carol would have been the only one but given she'll have been away it'll make sense for them to move to replace her.