I find it worth mentioning that "midcore" in FF14 doesn't actually exist. The two difficulties are "standard" and "high-end", and the only meaningful distinction is "if it was in Raid Finder at some point, it's considered high-end."

Quite frankly, the people who want harder content in 14 that doesn't come with the pre-planning, group coordination, and time commitment required by EX and Savage need to find another game to play. Something like the Mage Tower in WoW would be a much better fit for them. I'd suggest solo Deep Dungeons, but that would come with a heavy time commitment in order to find success.

I absolutely see the appeal of that sort of thing. You can join and leave at any time without ruining the content for everyone else who's participating, it's hard enough that you have to shut the second monitor off and actively play the game, punishing enough that an actual fail state exists yet easy enough that the only time your group sees the fail state is when it REALLY DESERVES to fail... honestly, most of Bozja successfully hit this mark and I'm surprised that we got island sanctuaries of all things instead of another Bozja last expansion.

But don't misunderstand me. Eureka and Bozja are technically "standard" content. Probably about as hard as "standard" is going to get in this game, and that's probably a good thing.