Do you think the devs intended multi-flare blm?

[Spot]

And ofcourse I am aware of an exploit with manaticks allowing infinite use of (Transpose - Flare - Fire II - Flare - Transpose)

That's not an exploit. People throw that word around almost as much as they do "toxic". OMG! look! that Warrior can swing his axe right after he got done swinging his axe. . exploit!

[Pacifyer]

That's not an exploit. People throw that word around almost as much as they do "toxic". OMG! look! that Warrior can swing his axe right after he got done swinging his axe. . exploit!

You may classify this however you want but it does not work as intended.
It is intended that after casting Flare you should be dry on mana with Fire3 buff on you which means you may recover from it only by using Transpose, Convert, Pot or bard Ballad. Which is not the case.
Playing around mana ticks as well as timing autoattacks is a legit practice and I do not argue this.

So basicly you are exploiting server code flaw to achieve your results. However this exploit has such a minor impact on gameplay and requires major code changes so that SE just ignores it for now.