Healer mimic(healing potency +20%, enhancements on most heals) + Mighty Guard(40% damage reduction) + Basic Instinct(no damage penalty to guard, 30% run speed boost, healing and damage +100%) = You can solo many group things. With that set of buffs gobshield lasts a few hits and pom cure becomes a stupidly powerful heal. And you still have diamondback for when an immune would be called for, you can still vibe check(rams voice + ultravibration to insta-kill packs every couple mins), and you can still set up for big final stings if you like.

But yeah, like RaideDuku said - the people mentioning BLU for aetheryte tickets are mostly referring to the weekly carnivale bonuses. Its 3 stages, two of them with extra requirements, and a boatload of poetics gil and allied seals for completion.