[Suggestion] Blm Firestarter: Let it stack to two for uninterrupted casts

[Fendred]

The black mage's firestarter proc, which allows for an instantaneous cast of fire III, is based on fire I hits. By the time the server registers the hit for fire I, the black mage will already be casting another spell. As a result, black mages have to interrupt their spell casting in order to make use of the firestarter proc. There are multiple issues with having to do that:

1) The black mage has to deal with the global cooldown resulting from the interrupted spell, so he can't use it right away, delaying the use of the firestarter proc to instantly cast fire III.

2) The player may have been in the middle of casting blizzard III to switch over to three stacks of umbral ice to recover mana. A black mage that fails to interrupt the blizzard III cast fast enough will lose the bulk of firestarter's benefits because he will no longer have the damage boost from three stacks of astral fire. Using the proc right away would just delay his mana recovering and deal an underwhelming amount of damage.

A simple solution to this problem would be to allow firestarter to stack up to two times. So say I cast "fire I" and it gives me firestarter while I am in the middle of casting another "fire I". With the current system, if I gain firestarter again from the second cast of "fire I", I lose the last instance of the firestarter proc. In the system I'm suggesting, if the second cast of "fire I" triggers an instance of the firestarter proc, that instance of firestarter is saved, and I would then cast "fire III" twice using the firestarter procs I have saved up.

The other change I would recommend would be to alter the firestarter proc so that it also causes the next cast of Fire III to deal damage as though the player had three stacks of astral fire up in addition to its usual benefits. That way, if he goes through with a cast of Blizzard III after a firestarter proc went off, he can still gain the full spike damage from the instant cast, 0 mana Fire III that firestarter provides.

Both these changes would allow the black mage to continue his casting seemlessly without having to constantly interrupt himself every time a firestarter proc shows up.

So why am I making this suggestion?

Black mages and casters in general have a queue for casting spells that lets the player start casting his next spell before the last one is done, leading to a very smooth basic rotation of spells. Then out of nowhere comes the firestarter proc and I have to hit the breaks. Its mildly jarring and annoying, and the fact that it doesn't stack with itself at least once means that I absolutely have to interrupt my next cast to use it properly. As a black mage, I want my spell casting to flow seemlessly from one spell to the next and give me enough time to react to any procs or spell effect durations that might be coming to an end. The black mage has to plan what he is casting next, and firestarter comes out of nowhere and disrupts my casting.