Possible changes for the better.

[Dhex]

-

Lancer would make sense.

Invigorate 400TP
Keen Flurry 40% Parry Rate
Feint Slow +20%

Why not tweak classes allowed to use Life Surge -> and let Warrior access it?

Life Surge
Lancer Lv.18
Cast Time Instant
Recast Time 90.0

Ensures critical damage for first non-magic action used while Life Surge is active. Damage dealt will be absorbed as HP, up to 10% of maximum HP.
Duration: 10s

This would be a nice addition to Inner Beast - ensuring a critical (thus higher heal) then adding the damage as HP as well.