Auto-translated
Well, could we somehow remove or modify the spikes on the lizard? I'm not sure if that would work. As I understand it, the heroes will be both illithids and humans, right? Then it would be logical to give them some kind of mask so they can remain unnoticed.
I suggest we start discussing stats. For example, Ar proposes a stat for kobolds; the others either agree or suggest making some changes... Or is it too early?
By the way, for the alternative illithids, we could remove the penalty in melee combat, while weakening their ranged attack and increasing their defense. Otherwise, if someone manages to get close to them, they can easily be defeated, and it will be harder to use hypnosis... But this way, they will have a better chance of surviving, and therefore of casting enthrall. The duration could be the same as for the alt-demoness's "Temptation" spell.