The problem with these suggestions is they're all an illusion of choice.

Someone will inevitably determine the mathematically superior option and any other choice becomes meaningless. Look at Tenacity. It raises your defense by upwards of 5% yet how many tanks do you see running around with it melded? Virtually none. Why? The extra defense means nothing. Not even at the Ultimate level will you notice really Tenacity because it doesn't save healers any GCDs at its current level. in the case of the OP, adding materia that grants a buff that you lose for 15 minutes if killed would cause so many issues. Imagine PF where if someone gets you killed, you lose 10% of your damage with no way to recover it for the length of an Ultimate encounter. It would turn DPS checks into "wait 15 minutes so our strength comes back."

In a single player game, you have none of these issues since you aren't playing with other people. You can use whatever setup you fancy because no else is impacted. A MMO does not have that luxury. Opting for more HP when it isn't necessary just makes you wrong for no reason.