I think I like the banded mail option and +3 NA.
40 ft speed is fine.
How about Str 18, Con 15, Dex 10, Int 12, Wis 13, Cha 13?
Those abilities look fine to me.
Were we going to give them an SQ such that they die if they fail a Will save against a mind-controlling effect?
OK, if you want to leave that SQ for later, how about dealing with the crook weapon?
The original's fist damage is just about what they'd have for an unarmed strike, so I'd say go that way with IUS as a bonus feat.
The crook seems like a weapon that allows you to trip or disarm an opponent, except it allows a grapple instead. The big question for me is if the "immobilization" should just be the normal effect of a grapple or if we should give it some stronger magical ability. What do you think?

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.