In the Lord of the Rings movies and books the trolls were valuable and not numerous. There would be only a couple dozen of trolls in a large army. There should be a seperate count for trolls because trolls did not have infinite lives or as many as the or cs. It would be just like nazgul how it is a different life count then the regular orcs. I think this would improve the gameplay on maps where trolls seem to dominant the game.
Edit: After some thinking I think that on Minas Tirith this shouldn't be taken into affect because that map is level to level combat which the whole entire orc team relies of trolls to bash their way through, and that army was huge so it would make sense that there would be more trolls.
On the maps Helms Deep and Moria orcs would be able to bash the gate but only do half or a quarter of the damage once the trolls run out of lives. This would allow the orcs to still break gates but without trolls. And you also could use ladders to go past the gate anyways.
-Dorado
Edit: After some thinking I think that on Minas Tirith this shouldn't be taken into affect because that map is level to level combat which the whole entire orc team relies of trolls to bash their way through, and that army was huge so it would make sense that there would be more trolls.
On the maps Helms Deep and Moria orcs would be able to bash the gate but only do half or a quarter of the damage once the trolls run out of lives. This would allow the orcs to still break gates but without trolls. And you also could use ladders to go past the gate anyways.
-Dorado