As the title states, this needs to be done. Siege damage needs to ignore shielding spells and cut through armor and the absolutely overpowered overhealing that many zergs have. If you're trying to defend against a blob with fewer numbers, siege is your only real option, yet it's still laughably ineffective and the larger group, which usually has more healers if it's an organized one, simply shrugs it off and batters down your door anyway.
The fact is that we need more counters to these huge blobs of players to make a siege an actual siege rather than a simple PvDoor fight. Anyone else agree?