system
Given the following post, respond as if you're commenting on Reddit:
human
[Pacific Rim] The Plasma Cannons seem to be the most effective weapon against the Kaiju, why not mount them on the walls?

If you watch the fight between Gipsy Danger and Leatherback, the plasma cannon completely destroys it, leaving it a flaming heap. The plasma cannon is clearly capable of penetrating the skin of the Kaiju and turning it into a steaming pile of meat. My question is, why don't they mount it on the Anti-Kaiju wall? Even if you take into account the fact that if the Plasma cannon had short range, you could mount it on a moving track on top of the wall and just move it into position.

The pros of this is that they won't have to worry about power generation since it could be powered by a power plant on land, and by having it on the wall it could have all the ammo and support it needs to make it as lethal as possible, and give it the best chance to win. Not to mention you can have multiple plasma cannons so a single volley can take care of the Kaiju threat.

TLDR: Put the Plasma Cannon and Striker Eureka's chest cannon on a moving track, move them into position before the Kaiju get there and problem solved?

Edit: You all brought up a lot of good points I didn't think about before, I knew asking here would be a good idea :)
gpt
That was the plan. The CAT-IV Kaiju codenamed Mutavore demolished that plan. AAR showed that Mutavore appeared well within the projected killzone for the plasma turrets and destroyed the wall long before the turrets can do any damage to the Kaiju. In fact, if it were not for the actions of Striker Eureka, Australia would have been lost.