Minus the artifact mod, Seismic Charge and Shield bash do significantly less damage than Melting Point, and that disadvantage is compounded given the fact that Melting Point debuffs the enemy.
I’m not saying Melting Point should be changed at all. I’m only saying the other two shoulder charges should do the same amount of base damage. This would be balanced because again, Melting point already exists and has the advantage of a debuff.
Thank you, and have a nice day.