Otherwise, I want to point out that everyone, except for Ple-Sen (and even that's not certain), will have melee fighters. In Revan's expedition, there was a situation where players got stuck in a gorge under archer fire - and I believe that, unlike, say, fruit, this is not an unfair plot device. It's a perfectly natural situation to which the current party may not be very well prepared. So, think about it some more.
Where do we end up when we save the world?