I'll just update this post as I find errors.
Not Gamebreaking:
-Cannot embark with any weapons or digging tools. Or anvils. Not sure if this is intended
-Only underground crops but no way to get underground until caravans
-Revenant buildings are blank until built, which makes it mildly more difficult to designate several, or check why one is being worked on
-Cannot build glass shapper (shaper?) because it says there is a creature occupying the site. Attempted several times. Possibly due to only one edge which is pathable?
-I'm not sure if this is me being stupid, but I don't think the mechanics skill exists
-Trade depot blew up when a cultist caravan stopped by. Know you said not to trade w/ them, but only them and elves come. Can't access stone, so only wood crafts, so elves were out. And I needed a pick
-Empty souls from a soul shard does not require anything and yields a soul shard plus many souls
Crashes:
-Attempt to summon holy stone from dark glass summoner crashes
-Convert soul essence into bone crashes
Suggestions:
-All masterwork buildings are disabled, some might be applicable
-Between no picks at embark, all underground plants, long plant maturation times, and plant based unique buildings, it can be 2 years game time before this race looks like anything but handicapped dwarves.