Q4: What are, if any, the limitations on the fleshcraft and bestow life advanced talents (especially the combination of the two)? Also, how do you determine the body/life bestowed creature's ability scores?

From what I can tell, the only explicit limitations of fleshcraft (in the case of creating a body) is that if you want it to look like someone specific, you must make a disguise check, and the only implicit limitation is your size limit for creation effects. As for bestow life (in the case of granting life to an empty body), the only explicit limitation is that the created creature is a "1st level commoner of whatever race its body was crafted to mimic."

It seems a bit questionable to think that someone could make the body of any monster whose size is in the caster's creation range, which could then be reanimated into a incredibly powerful undead, or given life through bestow life and be made the caster's friend. Likewise, it seems odd that bestow life doesn't seem to have an explicit HD cap the way reanimate has, or the CL to HD scaling that animate object has. Yes, it says it makes a 1st level commoner, but that's just a single class level that takes no account for racial hit dice. It feels like these uses of these talents are unusually open ended compared to how other advanced talents are designed.

Likewise, it isn't clear how ability scores are to be determined for the fleshcrafted body/life bestowed creature. At least bestow life's "awaken" function clearly states a straighforward 3d6 for mental scores, which could be extrapolated to the "grant life" function, but fleshcrafting a permanent body is quiet on this point.

So any clarification, rules declaration, the pointing out of something I missed or a previous ruling, or any combination of those would be greatly appreciated.