Here’s all of my input. I’ll make it clear from the start I don’t care about PvP in this game so this is from strictly a PvE standpoint.
Crown and crossguard are worth getting. Crossguard makes things vulnerable to pierce if you can weapon swap 2h swords. I’m not sure about skull swing level increase making the duration last longer, usually those are effects are listed on tosbase. But I also haven’t played past highlander2.
I would drop points in gung ho or concentrate (or both) for increased pain barrier. You can also take points out of bash if you buy the attribute and skill reset and put bash at 1, you still get the attribute.
I no longer recommend attaque composee level 5. It’s extremely annoying to maintain. I would stop at 3 before venier max. I use lv 1.
Attaque Coquille isn’t worth getting beyond 4 or 5 (with or without venier) because it has 100% uptime then. Put those points in to lunge. I would also put the extra points taken from composee in to lunge as well in order to max it