how would YOU have written the Borg to be better than they were portrayed on VOY.
Play up the "Borg as slaves" aspect. Show them as being alive under the programming and control. Fully aware of the horror that they're being force to commit upon others. Not all of them would have this Stockholm syndrome thing, that Seven had going on.
In one episode, have Janeway be face to face with a blank faced drone, and for a moment his face becomes animated and he says "Help me!"