One suggestion I'll make is to use Flash instead of Shield Lob for the initial agro of some mob groups. It depends on how close they are initially positioned.

What you DO NOT WANT is a group of mobs (2-3) agroed by Shield Lob. Shield Lob means you (for 1 GCD at least) have X agro on one and zero on the rest -- any heal during that time means you've lost agro to healer. And allowing heals to start fast is good as any cooldown.

Let's use that initial part of Snowcloak as an example, up to 1st boss: First part is 2x Ibex, 1x Goobue, 2x Spriggans, 5x Wolves (grouped as 2x and 3x). The first 5 are widely scattered, so you Shield Lob each of them individually -- don't skip any. Then the wolves are close together, so you run mid of the 2 wolves, Flash, mid of 3 wolves, Flash, then stop and kill. Could be 5 and 5 kills, or pull all 10 at once if your group is up for it.

After the above you have a solo bear, then 3x mobs, then first boss. You don't need cooldowns for any of that, so use them all during the first part and they'll be back once you finish boss.

I don't like to hit cooldowns until I'm about to stop and group them for killing. That means the initial seconds are the worst -- so biggest cooldown first. I'm usually WAR, so what's that for PLD? Sentinel I guess, followed quickly by Foresight and Convalesence let's say. Sentinel won't last the whole time, but it covers where you're weakest and then the other stuff let's you cruise to finish. Rampart and Bulwark could be for 2nd set of 5, or if you're pulling all 10 at once then mash those ASAP too. If mashing all at once, I guess you'd have to start one or 2 just before you stop running -- otherwise they won't kick in fast enough.

For Warrior it's still pretty similar. I still Flash while gathering, then Overpower after all together. You pretty much spam Overpower until they die or out of TP. Mix in a bit of Unchained, Berserk, Maim sometimes, Steel Cyclone, Bloodbath.. But the most is Overpower.

TP can run out on WAR, but it's not bad. The flash while gathering conserves some TP, most trash dies around the time you run out from spamming Overpower, and if you do run out you can Steel Cyclone, Flash, or combo to fill the gap.