Nevertheless, some sort of rudimentary communication with creatures like trolls, Reiklings, Goblins (esp. goblins), and those new mountain giants would be a wonderful and new experience for many players.
Edit: I remember playing Final Fantasy: Tactics (on PS1) and enjoying the Mediator job class immensely. Recruiting monsters, confusing, distracting etc. Most of it is covered under illusion but I suppose my heart will always want to put on a fancy suit and talk my way though a dungeon.
Kindest wishes,