All Sizes Matter!
Ogres and Trolls are beefier and way beefier than Humans and other medium-sized humanoids and can be described as pushing the limits of a medium-sized creature.
Since hit points and HD are based on races in RoS, would it be reasonable to create a house rule for raising the HD of Ogres and Trolls to d10 and d12 Hit Die, respectively?
If so, 1st-level Ogres and Trolls with Con modifier +5 could potentially start with 15 and 17 hp. And if they use the average result for rolling hp, then they'll gain 7 and 12 hp per level!
So, what seems to make sense (i.e., Size Matters) could have game-breaking consequences. Because of this, I'm sure there's something in the Davokar, a rare herb perhaps, that could be gathered and alchemized by the more squishy races to level the playing field. Witches call it "troðabani," or so it is whispered. How this so-called troll's bane works as a poison that specifically affects Ogres and Trolls, as well as its market value, remains to be seen.