Umm, no. Like the rest of the post you're referring to explains, Shield Bash being on GCD prevents it from being used if you've done any of your main attacks other than auto-attack. Using proper rotations to maintain hate, means your GCD will be running most of the time. If the boss's cast time is shorter than GCD, as it apparently is in end-game fights, you will not get Shield Bash off in time to stop it unless you happen to be lucky enough that he starts casting moments before your GCD is over.
If you want to be sure to have Shield Bash available to be able to stun on demand, you will need to use mainly auto-attacks, which probably won't be enough to keep the boss's attention on you.
So in effect, you're saying that PLD should stick to mainly auto-attacks to be able to stun on demand, but it's the PLD's fault for using wrong rotation if the boss goes after someone else. You can't both have the cake and eat it, you know =/
On this character, you're absolutely right that I haven't come that far. However, my main is lvl 45 GLA/PLD (Lodestone profile), so I do have those skills. But even there you're right that I'm not too familiar with end-game stuff, and thus I based that particular statement from the post mentioned in what I quoted (about Ifrit HM). Since I speed-leveled for the FFXIII event, I've only come as far as just beyond Titan NM story-wise.
What I have noticed, however, is that I rarely have time to stun tougher enemies, and that many of the really tough FATE monsters are immune to stun/pacify to begin with (and extrapolating from that, I've surmised that a high percentage of bosses over all are immune, which slightly defeats the purpose of interrupts IMO). So perhaps there wouldn't be that much point in setting it on its own GCD (like Brutal Swing), but it would certainly help us to utilize the skill better. Even if it gets a longer CD (to have no CD is nothing that I've seen anyone ask for in this thread), it would mean that it would be available for use (as long as you haven't used it in a while) even if you just used one of your GCD skills.
Yes, RoH (especially in combination with Shield Oath, and used within combo) maximizes enmity output, but that sort of requires you to use them in the first placeAnd in order to always be ready to stun ("on demand", so to speak) you can't use other GCD skills. Sure, later battles are mainly scripted and you learn the patterns (or so I've heard), so calculating when to hold back might be easier. But even that is not something I would call "stun on demand". Semantics, maybe, but even so...
For me personally, it doesn't matter that much if things remain as they are, so I'm not asking for anything really. Sure, it would be nice to be able to throw in a stun (or pacify) to interrupt AoE attacks on a moment's notice, but except for the full-circle attacks they're fairly easily avoidable. And there's also the resistance build-up to keep in mind. I also see the potential problems with removing it off the GCD. The reason why I responded to the post as I did was because it seemed to me that the person didn't even read the entire post they were reacting to. And for reading a post (and wishing others would as well), I hope end-game experience isn't required![]()