Alright, a few notes. I abandoned my playthrough because I'm not really feeling Terraria right now but I checked out what I could of this mod anyway. It's for the most part really good, but it has some areas that need polishing, specifically the text and item names. Very many items have lower case letters where there should be a capital. "Terra staff" for example, when it should be "Terra Staff."
Second, some things really could use a little clearing up. I'd have never thought to visit the CLOTHIER of all people for the crystal key, the front page post should have obtuse information such as this in it, also including other less than obvious mysteries like were to get RPC's (probably Cyborg, now that I think of it.) a mimic loot table so we know when to stop tediously farming them and what normal geodes, the ones that say "I wonder what's inside?" in the tooltip, are for. Some of the True spells are also missing sounds.
Lastly, Crystal King seemed waaaayyy too tanky, until I turned off Expert Mode. Why does he have approximately 3 times the health in Expert compared to normal, when most bosses barely get a 50% increase?