The initial Gatekeeper in the Gatekeeper encounter in the Vault of Glass raid in D2 uses the Precursor Gatekeeper model instead of the modern model that it used when it launched. I do not remember when this changed, but I remember in Splicer, when the raid launched, it used the modern model. Some time after Splicer, it changed to a Precursor. I tried twitter and I'm trying here to get this recognized. Not a big deal but I also think this should be a simple switch if it was somehow done accidentally.