Don't you have to play while logged with your US account to make use of the narrator dlc?
My fighter is 38 but I can shed some light on his current skills.
Cyclone Masher is straightforward. More levels apparently increase flight time so it's good in my book.
Shockwave : I took it but not sure if it's worth upgrading. I guess it reaches a certain range so might be useful later on?
Tempest Edge : Now this I am very torn on. On one hand it does quite a bit of damage and the AoE is amazing, but the end thrust is non cancelable, and has gotten me hit/killed way too many times. Even if you try not to trigger Tempest Edge and you whirlwind for half a second the final thrust always plays so you lock yourself in place for about 1,5 seconds, which can be fatal. I haven't played long enough to say but I get the impression Reflex Guard doesn't trigger while in that move (which makes sense but still sucks).
Reflex Guard is mandatory, of course. Saved my butt plenty of times.
Missile Reflect : I got it but I don't really notice it working (only 30% chance at lvl 3). IF it works with Reflex Guard it'll be awesome (fuck those crossbow goblins/skeletons).
Bash : Another skill that I don't see working often, too much action on screen (also stun rate is shown as 30% at lvl 3, kinda sucks for that many points invested AND needing a block to proc first).
Cover Allies : got it but not many people actually stand behind you to dps. The buff range at max level is really huge but I can't tell if it increases just physical damage or magic damage as well (what does ATK mean?).
Shield Tactics : Being able to block hits and ignore knockbacks is invaluable so this will probably need to be maxed.
Haven't used Distraction / Sacrifice yet. I also always wear 2 weapons per bag to be able to switch when the weapon gets kicked off my hand (which happens WAY too much imo).
Edit :
Awesome, was thinking I needed to start all over. Welp, making a US account now