To keep things fair if some have bonuses in certain areas & minuses in others, then everyone should have, to keep things fair. One way to get ideas is to look at the characteristics that longnecks and three horns have. We've seen that threehorns can smash rocks, at least smallish ones & Cera's dad pushing large ones and logs around. Lonenecks can go into some areas others would find it hard to breath since their necks are so long. They can also reach food easier then others, though threehorns and others can smash into a tree to try to knock down some food, longnecks, if they are large enough, can reach it.