So do explain what exactly is balanced about a Terminator with frag/krak grenades, access to stackable S modifier, with Free Initiative 6 and Nemesis Force weapons. All coming in at the exact same price cost as Thnuder hammer assault terminators. Heck regular shooting termies don't even come close to that destructive power
Downgrade the invul save, downgrade the points cost. It goes hand in hand, but in terms of balancing, does a model with a 2+ Armor Save, really justify any need for a 2+ invul save? I highly doubt it
For as well versed as you are in the game Darklink, I'm pretty sure you are well aware of the case between Assault Cannon Vs Lascannon. IIRC (from memory) but I believe the Assault cannon beats the Lascannon every time in terms of killing armor. A psycannon only reinforces the math on this. Soo do psyflemen count for nothing in regards to allow them to open vehicles? Imho, psycannons should not be dishing the amount of disgusting damage they do against vehicles at range that they do now. Honestly, if someone gave me the choice between melta guns and psycannons, I would always choose psycannons, all the time. But the honest truth still is, Psycannons are OP. If GK want to pop armor, rely on a dread, combat or get some gaurdsmen to tote those melta guns. From the sounds of it, you obviously have not been on the receiving end of a psycannon spam while playing a non GK army.
But Psycannons don't give them a small chance, it gives them a HUGE chance to pop AV 14. Hence the reason why I suggested either downgrading the Psycannon to equal an assault cannon, ergo it can still touch AV 14, but not have the ease of poppping it.
Like 3 armies in the game have psychic defense man...Space Marines (and equivalents), Eldar, and Tyranids. Also, I can count the number of times I've perils w/ my armies that have psykers ( I play Eldar, BA and GK) on one hand. That still says nothing about de-stacking Hammerhand. You honestly only need S6 and rad grenades (oh look that's 1 IC attached to insert GK unit here) to start causing ID to base T4 models without having to activate FW. I said nothing about multi-casting it, if you were thinking that. Let GK multi-cast it, but prevent the stacking.