I don't agree at all about the cerebrelith. Compare it to a level 11 human psychic warrior or wilder. Vastly better stats, vastly better defenses (NA, DR, immunities, resistances, saves), vastly more skill points, telepathy, natural reach, better physical attacks than any except psywars dedicated to offense, PLAs and SLAs that are already plenty useful and become more so because they're spammable. (There are a lot of situations that a couple dozen greater teleports could solve pretty much on their own.)

So it doesn't have great natural attacks -- so what, its entry specifically mentions wielding weapons. Can you imagine how beastly this could be with PC-level equipment?

A cerebrelith would dominate the level 11 parties I've seen at real tables. With a half dozen class levels it'd fit nicely with spellcasters starting to sling around their top spells. I vote LA +2, and I'm only going that low because I need to consider level 20 as well as level 9.