[Senna]

A hit check isn't the way to go, no. That's not the problem at the moment. Even with a hit check, that doesn't matter when the person will just simple SWA stack and auto-hit you to death. It like running from death but death can chase you across the map just as easily. Death that can casually punish you for 120-200 damage a hit for being Evasive and on the same battlefield as them.

And yes, the Vorpal problem, due to the changes in strength providing health, a lot of tanks seem to be using Bleached Fang to reduce the Vorpal factor. (And Black Knight is just as common)

Changing the Burn status to affect armor too would be a start, and the only change I'd personally suggest.

This is a good start yes. It defeats one problem however, they can simply remove the status if they care enough about it but it's a nice step forward to help reduce the armor portion.

Percentages are going to be better than fixed amounts. If the burn status reduced defense by 20% then it would knock a solid 10 defense off of someone building with the usual 50 or so. That's 20% extra damage on your attacks. If there were more guard break effects, that 10% extra damage reduction people just slide right in there would not be quite so annoying.

There is also a status that does exactly that. The fact you mention burn should do that only proves how little of an impact that status has. The status is Acidity. Base on the technique, it will reduce the stats or reduction percentage. The problem is, this status doesn't have a decrease in them too much. At best, you can reduce up to 10% or 6-5 Def/Magic.

Bustercannon is a good option that's off-meta yes but one of the reasons why not many people use buster cannon because of the current meta. You have tanks that either able to completely remove it within the next turn or avoid taking damage until it's gone, or even stack themselves up on a lot of Items, In battle (Like guard, Golden aura and etc) and class reduction (Wraith guard, Matador, class passive that increase reduction since there are a few and Etc.) whereas even after using buster cannon, they still have a lot of reduction at their fingertips. (Or just cleanse potion and all it a day)

Even with some of the suggestions, I can see small optimal ways of them adjusting around to fix them. We can adjust the armor yes but reduction stacking is still here. From Items, battle to even Class bonuses. And then we have SWA stacking which makes it almost impossible to out-DPS the walls. The fact they can also improve this reduction via parrying skills. The person that understands what they're doing can simply hug the wall or anything on the map that could protect their back and pervert anyone from even getting close enough to back attack (Forcing parries). They're oppressive because they're very flexible with little solid weaknesses. As I've stated in my other topic, they can do almost anything an evasive build can do but better.

It is part of the reason why I suggested skills that don't exactly ignore their reduction all together but instead, bypass some of it. Or even use their reduction or health against them. Though that may be asking for too much, just anything that can't simply shrug off the following turn or ignore all together works.