If you had no trouble with PLD back then, then you might actually get bored tanking.

Just kidding... or am I?

You now have a 2 stage aoe combo instead of Flash. The combo skills can also be buffed with Fight or Flight. Your tank stance enmity multiplier has been heavily buffed, and other effects (-dmg dealt, -dmg recieved) have been removed. Your dmg recieved is reduced by a trait, so you can turn your brain off from enmity issues, just deal dmg and you are fine!

Sheltron has been moved to earlier levels (guaranteed block for 4/6s), and the oath gauge to use Sheltron increases by auto attacks which are also triggered by simply using your skills. Direction for AA doesn't matter.

You will see, you have an easier time to focus on mitigation and positioning. Wall-to-wall pulls are most common, but watch out for Brayflox! In my experience, it can be overwelming for healers since they get their stronger spells after 35 (e.g. Regen for WHM) and dmg recieved skyrockets from Haukke quite a bit.
Otherwise, you will be fine. Guildhests I deem useless, as most are done within a minute anyway. What's important is muscle memory, as long as you know where your buttons are, you will have no issue.