Infinite Flare a la 2.2 wouldn't even be good any more and the change in the way the stacks work is causing more problems than it solves including:

1) Do you know what happens if you transpose too early after flaring because of lag? You lose all your mana, you stay in Astral Fire III and you have to wait 10 seconds before you can even regenerate mana. Every class that says "messing this up is too punishing" is hilarious. How about "if you mess this up, you lose all your TP and can't regenerate it for 10 seconds".
2) There's like a fifteen year delay between casting Fire III and being able to cast FIre IV. I cast Fire III yesterday and I just now got my Astral Fire stacks and I'm offline. Ok it's actually like 0.6 seconds. That still feels like an eternity and it adds up over the course of an encounter. Because of lag.
3) STOP TESTING BLACK MAGES ON JP SERVERS. No class is as sensitive to lag as Black Mages. Bards/Machinists might have encountered this problem by now, but if you're lagging enough, if you go Skill->OGCD->Skill sometimes it can go Skill->Ski-OGCD NO SKILL FOR YOU-> Recasting the skill. When you have to keep two buffs up, every microsecond between using a skill and the buff actually coming on your bar feels like a nightmare.
4) Something something thunder is useless something something. I don't care. Take steps to make Black Mages less sensitive to lag. It didn't matter when the spell we spammed refreshed the buff we wanted to keep up, but jeez it does now.

Honestly, I love the class. But it gets absolutely hammered by lag. Ninjas talk about how annoying that extra few seconds for Mudras are (less so now that they have Huton renewal) but they never have "I used Trick Attack, whoops I lagged, whoops Suiton fell off, whoops, now Trick/Sneak attack is on cooldown" which is what happens with Enochian. No melee has "I dumped my TP on this skill. Whoops, I lagged, whoops, now I'm locked out of regenerating TP for 10 seconds." And it's all tied to those fractions of seconds between my computer talking and your computer listening.