Adding risk to the game?

[Vnolan]

That's lazy and poor game design. The player is more than capable of adding such difficulty if they wanted it. Pick something with some challenge and add a penalty for not completing certain goals. Doing weekly savage runs? Restart from the first floor if you wipe on any of the above floors. You could toss away a large sum of gil if you die or prevent yourself from rolling on loot (assuming it's entirely your fault) while doing savage weeklies or EX farm parties.

and Eureka that punishes you for dying, needless to say, at least in Eureka, this isn't popular at all

And it wasn't even implemented properly. Unless you were in a dead instance or ventured far into the map on the first day, you had to go out of your way to get deleveled. Imagine if they made it an automatic loss of xp on death.