Please, no voiceovers. It would make the efficiently running game into a behemoth, introduce more bugs and system incompatibilities, and worst of all, increase the load time. Currently Mount and Blade is the fastest running game I've ever had. Near instant loading, instant save and exit. Besides, voiceovers would decrease replayability since it would be the same voice over and over again.
Certain game developers these days seem to think the more gigabytes the better. Mount and Blade totally undid all that. Only 700 something megabytes.