Thanks. If the +12 seems out of place for an LA+0 race, note that it's a lot like a Changeling's +10 to Disguise, and they still get other pluses...though Min-lau are probably a bit higher-powered than changelings, come to think of it. I'm giving myself wiggle room in power so that I can play with these concepts; if they need some trimming down, then I'll waiting for other homebrewers to show up and give me the "this is why it's overpowered" treatment.
Indeed, isojusses seem one-dimensional right now, which is probably where the "empty" comes from. The other races have at least one other quirk.
Crafting! I can totally work with that. I'll remove the Outsider type and give them something more interesting.