@Morf--your logic is on. Maybe a little larger, or not hunched over in that pose. Overall having the Deathseekers, (Ogre and Troll), and even a new Troll all a bit larger would be cool. As it stands, I feel that the current Ogres and Troll don't even warrant the 40mm base. Our battles have gone just fine with the 30mm display bases for these models.
@Wedge--we're all biased towards one army or another. Cheers.