What happened to the Chimera Soul Discipline? That was one of the cooler parts of the playtest and fed in perfectly with the moonlight meditant and Varsark.

I actually have a question regarding that. The weapons like Rope Gauntlets and Cestus state they allow you to deal different damage with the unarmed strikes, but the Emei Piercer and Dan Bong state they "Enhance" and "Augment" unarmed strikes.

Emei Piercer
This weapon is used to augment unarmed martial techniques.
It consists of an 8- to 10-inch-long, dual-pointed steel spike
set on swivels and mounted on a ring, so that it can be spun
around at high speeds when slipped over the wielder’s ring
finger. The ring prevents the wielder from being disarmed and
turns unarmed strikes into piercing attacks.

Dan Bong
These short, blunt sticks are held in
the hands to enhance unarmed martial
techniques and secured by a cord
looped over the thumb. They provide
the wielder with the ability to lock an
opponent and target pressure points,
granting you a +2 bonus on combat
maneuver checks to grapple.

If they are enhancing or augmenting unarmed strikes instead of replacing them, wouldn't they use the unarmed strike damage?

Actually, its a Kata Master/Kensai. Thought it might be fun to make a Sword Saint. Thus, Flurry of Blows and Spellstrike/Spell Combat are available to this character. Flurry of Blows allows the monk to make extra attacks as if he had Two Weapon Fighting with any combination of Unarmed Strikes or monk weapons. Since an unarmed monk has a hand free to cast a spell, an unarmed strike counts as a light weapon, a touch attack can be delivered by unarmed strike, and Spell combat is two weapon fighting with the spell being the off hand weapon (even though a monk has no unarmed offhand) there is no conflict when using Spell Combat as an offhand attack during flurry of blows, as it is essentially an offhand unarmed strike.

Especially since removing one hand from the weapon or putting it back is essentially a free action, there is no real issue with using Spellstrike with a two-handed weapon. It would be the same thing as replacing the weapon attack with an Unarmed Strike, which you could even do with the same hand that cast the spell. The Touch attack associated with touch spells is free action anyway. But here is where things get really fun, from the Core Rulebook:

You can touch one friend as a standard action
or up to six friends as a full-round action. Alternatively,
you may make a normal unarmed attack (or an attack with
a natural weapon) while holding a charge. In this case,
you aren’t considered armed and you provoke attacks of
opportunity as normal for the attack. If your unarmed
attack or natural weapon attack normally doesn’t provoke
attacks of opportunity, neither does this attack. If the
attack hits, you deal normal damage for your unarmed
attack or natural weapon and the spell discharges. If the
attack misses, you are still holding the charge.

So spellcasting Monks or characters with Improved Unarmed Strike can substitue an Unarmed Strike for the touch attack normally granted by the spell. With spells that have multiple hits available, like Chill Touch, this can get REALLY nasty. One hit first round, with Flurry of Blows + Spell on the second? Dastardly.