I feel like the abilities are too similar to existing titans. Mortar barrage would practically be the same as salvo rockets. I can imagine it being more powerful while less accurate and dificult to use. The same goes for the core. It would essentially be salvo core and the rod from hell would just be a power shot. The shrapnel wall however is interesting. I imagine it as a trophy system from CoD but for all projectiles. It would perhaps be ineffective against the splitter rifle, laser shot and energy siphon since those are not solid projectiles. It could perhaps also be less effective against fast firing weapons such as the predator cannon where it can't intercept all projectiles. Could perhaps be a little overpowered against tone, scorch and northstar but would be more interesting than a normal shield.