Shining Soul II question

While playing the game recently, I noticed that lots of builds only play with 5-6 skills, leaving the others useless (things like 2-3 weapon masteries where you'll only play one, skills like Warrior's Counter or Brawler's Evade that doesn't work at all)...

So, why not giving the player the ability to change these skills ?

Think about it... Warrior switching his Counter with the Dragonute's Breath and the weapon masteries he doesn't use with Brawler/Archer's regenerating health and...

Shining Soul II question