we seem not to be ready for Moschiach, as everyone producing a candidate list omits people from different groups from their lists – Y v L v MO, etc. Do you expect Moschiach to lead the whole of Jewish pepole or just lead the flame wars on Internet on behalf of your group?!
As death does not seem to be a barrier any more (gilgulim welcome?), maybe we should look at people who are accepted in all corners? Rashi, Ramban, Ramchal, Chofetz Chaim, Jonathan Sacks. There are also several candidates who made an effort to be accepted by broader Jewish community with some success, but, as a result, are less accepted in the yeshivish community despite their credentials. In my count, they qualify by their ability to lead the broader community, but I am not putting their names here to avoid reflexive loshon hora.