Endless Krayt raiding is unsustainable

I hate krayt. Not so much because it repeats, but because I can have over 150,000 points of rng difference, that comes down to only rng. That's utterly ridiculous. I literally never have any idea whatsoever what my score may wind up being til right at the end. But I have noticed, with some minor character upgrades, I seem to do worse than when the raid first started. I also hate having such a slim sélection of characters, which happen to be almost entirely ones I haven't invested in. I definitely preferred sith. And my guild went back and forth between sith and aat, so we wouldn't burn out.