There is one advantageous thing... they're grouped in directories by character, so it amounts to some 200 characters (I think). The first part of the directory name appears to be a character ID number, so if anyone wants to start picking characters and listening through their voices... just let everyone else know what character number you're doing.
Disadvantage, though, is that some of the promotions are not voice-based, but text-based -- for example, Jathil doesn't *tell* you about the Gezurite whatchamajigger trait, but the text does. Still, it may rule some things out (or provide some other interesting insights.
Are we a little bit OCD around here? Naw, it's those *other* people...
