That's what makes us a bona fide hero though. It's not the divine blessing, martial might, or ability to topple impossibly powerful foes. We advance toward what lesser souls retreat from... even if we're probably just as terrified, especially since Estinien is our in-universe dear friend.
I gotta do it in my now-iconic crimson (Dalamud) red Chaos set. (Not like I can do it as anything else, given I've taken a break from the game in general and just started playing again to level [MRD/WAR]/[PGL/MNK]...)
The skirmish with the Garleans and van Hydrus probably isn't in the trailer because it doesn't add anything (it's just an instanced fight in the ARF a la the Vault fight from 3.1) and doesn't relate to the story (the final battle against Nidhogg and the Horde). It might be important to the overarching Triad plot (and thus the overall plot of the game), but it's not a big deal right now.
Palace of the Dead is going to be in 3.3.