Macros, cooldowns and trinkets

[Ualaa]

I just have /cast Focus Magic.
It lands on a random party member.
Since no matter who I lead with, I target the mob when I push my "click" spam key.

The other toons, auto assist the hot toon.
And cast at the mob.

The mage never actually targets the party.
But after a session of grinding mobs, be it in an instance or several outdoor mobs in succession.
2-3 members of the party have the buff.

I'd assume, any one of them gets a crit, and the mage then gets the bonus from the spell.

[Aenar]

What about putting the line "/cast [nopet] Summon Water Elemental" at the end of the macro instead of the beginning? If the macro locks up cause of pet summon cooldown all the other commands are issued while waiting for cooldown to come back online. Unless a GCD error or un-useable ability in a macro will lock it no matter where it is in the code?

Also, does a water elemental scale in power with the mage's Int/sp? if so, casting the trinkets prior to summoning will be a boost too.