Well, I can't say I understood you, but I think my main point still stands: even vague, generic lines might change at some point, or be replaced. Which (ideally) should mean revoicing them.
For the record there are already FOUR alternate voices for the player character that have been datamined in the current build.
If they are just "tentative stuff" that will dropped or they'll become available option in the final game is anyone's guess.
Yes, I think I've seen them in UI: two male's, two female's. However, the protagonist in this game doesn't seem to be much of a talker; it's not DA:I, where every dialog response is voiced. Indeed, with this amount of speech they could have added all imaginable voice choices on day 1.
Ah, no point guessing, I suppose.