Having your character talk during cutscenes

[Duelle]

The moment they make them speak, they're taking your character away from you.

Depends on whether you see the characters as characters or as an extension of yourself. I personally decided that if my taru in XI was to ever be voiced, I would accept none other than Yamaguchi Kappei.

Besides, character behavior and responses are dependent on whether we'd have varied dialogue choices to represent different moral standpoints and attitudes. That's where it would get real tricky and make the OP's request unlikely.

Also, I'm a dude playing a catgirl. Unless there's some impressive vocoder stuff happening, that's going to be really unnerving.

The funny thing is that female voices knocked down an octave or so can pass off as male. Male voices don't have that luxury because you go from male voice to squeaks very quickly.