Looks like Temp and I are in agreement for most of these issues. For my final say in the ones that seem unresolved:
Voice acting - No, not in terms of dialog. Even if limited to cutscenes, that's a large enough project right there, to find suitable actors that can really do a good job delivering the lines. More to the point, it raises our aim even more when we haven't quite decided where we're aiming (the "Current mechanics" thread should illustrate this metaphor).
Note that simple vocalizations, such as when Syne gets hit in battle and goes "ugh", are still up in the air. But that's another thread.
Profanity - No. If anyone asks why not, I'm asking why. I believe that profanity simply adds nothing to a fantasy script. Cursing, as we know it, is a form of slang and would serve to characterize someone in our contemporary society. Our characters do not live in our society; they live long ago in a galaxy far, far away. I'm not against coming up with completely original curse words that have no context in our world (I can see Enna with an impressive arsenal of Drythian curses--and that would characterize her in her own world, not ours).
Custom names - Again, no. There seems to be some expectation out there that we follow a Final Fantasy-style name-your-character mechanic, one that I might avoid simply on that basis. But more to the point, that's an expectation that has far less bearing on my opinion than the practicality of keeping the names what we want them to be. First, this prevents players from naming someone silly names, which (I think) would damage the overall integrity of the script ("... is it possible? ... is my son, Herpetica, still alive?"). Second, custom names prevent any sort of word-play or modification of the default names. I think "Synergy" would be a cool ultimate special attack for our main character, but if his name wasn't Syne, it wouldn't make as much sense. And here's the kicker which pretty much decided it for me: If the names are customizable, would we call him Dell, or Delloran? With customizable names, it could only be one, and I think our characters would lose more than anything they could possibly gain.
So there're the rulings. If this causes enough whining among some of you, maybe I can be convinced, but until then, here are the new laws.