I had an idea about Grond. In the Return of the King movie, as Grond comes up to the gates of Minas Tirith, all the orcs chant its name and appear to be inspired by its presence. In Edain Mod Grond doesn't have any abilities or anything, so what if it gave a small fearless and leadership bonus to nearby orcs (nothing too fancy, a +15% or +20% attack bonus or something)? I think this could make it more interesting since Grond is basically a hero siege unit. Just a small thought.