A thought occurred to me with the NG+ coming is if they used it to also implement EX versions of solo instances. I doubt it will ever happen, but was thinking it would be pretty cool for those who want a little more challenge from these kind of duties.

Honestly, I've failed a lot of them already before figuring out what it was exactly I needed to do. That's a different kind of challenge though. I'm thinking instances that actually push your resources to the limits.

Are there any solo instances in the game already you would consider to be a bit more on the EX side of things? I know one I had a lot of trouble with was the SAM 60 quest. It didn't take long for me to figure out that Musosai sensei was not messing around, at all. But I really enjoyed fights like that because it really had me using up all of my hotbar to get through the thing.

Also, Red Chocobo EX doesn't count!