Except this is not "current level" content. Crystal Tower isn't either, but people run it usually for WT or for the weekly aether oil. And CT can be super facerolled, with the exception of WoD (which was probably still harder back at level/ilvl for it).
I don't see what's so wrong about actually learning a fight and it's mechanics. For dated content or for current content. You're mentioning Bahamut, but that's the exact reason it should be hard. Bahamut caused the Calamity that shook Eorzea to its core. Why would you want him to be faceroll? Coil was the equivalent to Alexander Savage back in the day (SCoB Savage was for those who truly wanted to push themselves). It's not designed to be pugged in Duty Finder. Just like Alex Savage is not designed to be pugged either, but rather ran with a static (although Creator Savage is not too too hard to PUG for some tiers).
@Ririta: T9 is not that difficult if people actually bother to follow mechanics. Half the time they aren't dying to Nael, but to not handling meteors correctly, or letting the golems get too close to each other.
And why even nerf "optional" content anyways. You could use that argument to argue against nerfing. It's not "required" to progress through the MSQ. It won't be "required" for 4.0, or any other subsequent expansion. And, even if it is the most amazing piece of content in this game, it is still not current content, which is what the developers should be focusing on. Not nerfing older content that's easy now if people just do mechanics.
That's your opinion. If it's so irrelevant, why bother with changing it, or nerfing it more than it already has been? Coil wasn't designed for PUGs/DF anyways. And aside from having the best storyline in the game, there are not enough "incentives" for people to want to PUG it at level, unless they just want to do it for fun, or to challenge themselves. In which case, they make a PF.
But I find that finding players that would want to do sync'd/minimum ilvl Coil for funnsies are, unfortunately, few and far between (they're out there, just difficult to find in the sea of facerollers). People would rather unsync content, and watch Netflix during while just spamming 1-2-3.