About the controller

I agree with the view that the current Controller is powerful.

Looking at the current state of characters and weapons, it is clear that ensuring fairness through minor adjustments is unrealistic.

Rather than relying on superficial tweaks, wouldn't separating servers by device be a more reliable way to achieve results (resolving the inequality caused by device differences)?

To begin with, Controller and Mouse & Keyboard are entirely different entities with completely different hardware structures. Attempting to create an identical experience for such fundamentally different devices is, in itself, impossible.