Aeolian Edge (Rear) and Armor Crush (Flank)? Ofc there's Trick/Sneak Attack, but Trick Attack (Rear) is superior in 99% of the instances. So much moving involved! What do!

Seriously, you're gonna be hanging behind the bosses most of the time anywats, so the biggest piece of forced moving involved is one flank strike every 30s. If that amount of maneuvering is too much for the current NIN-base, I'm utterly horrified.

If this argument is about open-world where you solo mobs, the directional bonuses are still easy to do. Just start moving through/to the side just before the global cooldown is off, and you'll always get those bonuses.