Hi ~~
I think in a way i am compulsive to invest a lot in spirit if playing a caster BD.
because this game is totally free combination. there would turn out all varieties of casters as long as they use magic. there are casters carrying a gun, carrying a shield, wearing heavy armor, and investing all in physique.
Let’s just say I am a bit old school. when I play a caster, I create a classic one. 
one that doesn’t invest in physique but spirit, one that doesn’t wearing heavy armor or using a gun or shield, or one that only has 1500DA or so or 800-900 AR. Through my effort, I could prove this type actually works.
My chain-reactive AAR bd can still act well in main game but not crucible 