Trample should be added to eternal warrior to make it meaningful to run. Knockout and insurmountable skull fort do nearly the same thing. Reversal was added as a void fragment. Frontal assault sounds like trench barrel on any weapon. Arc in general is the worst subclass for titan as even stasis is better put together with less stuff. The aspects do little to provide healing or damage reduction, meaning you have to build your armor mods around it. There isn't much to make effective use of blind (an inferior for of suppression). Juggernaut blocks your health bar so you can die without being aware of you get shot in the back. The fragments also just offer less or require undesirable triggers such as being critical health.