Piety on Nexus weapon

[Lyrica_Ashtine]

Thats incomplete. Spell Speed often allows you to squeeze a heal out in movement heavy situations when others without spell speed have to abort, e.g. Titan Plumes just to mention one.

Titan plume mechanic is a terrible example to elaborate spell speed. The tank will have no incoming damage while plumes are being cast - As it is being channeled. If the tank's prone to dying prior to plumes being cast, you're doing something wrong. There's no direct combination damage on the tank in that entire encounter unless too many people have died - Which will most likely lead to a wipe either way with 3+ deaths.

Also, for, like a said on previous message, for burst dmg.
Like the 5c claws in T9, with 0.12-.0.15sec less each cast, you may be able to do cure2 a little before beetwin the attacks, also, have more time to cast stoneskin during the bahamut favor before begining to cats a new spell.

In 10-15sec burst, with spell-speed, you may be able to cast one more spell, but with determination, you'll just heal a little more, not a bad thing neither, but I prefer spell speed.

And dont make me wrong, It's not becoz I'm playing spell-speed that I play " on reaction ", if I was playing like this, I whouldn't go far in T9 when I went there first time with something like 94-95 ilvl.
I precast a big heal, like Cure2, when I know my tank gonna take high dmg, after trying the fight so many times, I know when he may take hight dmg (or may not in the scholar crit with his shield, and then, I overheal, but whatever)

A properly prepped up tank can survive T9 claws: Stoneskin/Adloquium beforehand, Virus Nael, Pre-cast a Cure II/Adloquium before the first claw even goes in. Even with 0 spell speed you can get 2 cures in during the claws and one right after the 5th, spell speed makes no difference on this part - Three cures if you use Presence of Mind. Depending on the amount of favors you can even toss in a divine seal or lustrate right after the second adloquium. This part can be solo healed if needed or even a well-timed benediction is sufficient if you are late by reaction to it, rather than anticipating it. You even mentioned you pre-cast yourself. Whether you pre-cast with 1,90s casting time or 2,00s casting time, this does not matter when pre-casted.

For sake of numbers, you keep mentioning 0,12-0,15s casting time difference, but in practice that's way less. There's natural spell speed on a lot of pieces whether you want to take spell speed or not (HA choker, Sol choker, HA gloves, Sol gloves etc.). Without even trying to get spell speed in my gear I already have a 1,90s casting time on Cure. If I were to swap out my HA cane for something without spell speed that's at 1,94. Even if you manage to get 0 spell speed from your gear you're at a 2 second casting time. With max spell speed on the nexus (as we are discussing this, not gear overal), the nexus will decrease your casting time by a maximum of 0,04s. Contrary to the 0,12-0,15s you mentioned before.