Hi,
well this is a short qol thing I guess.

Pretty much the title honestly. I'm in my first playthrough as a spellcaster and have noticed that I can not see how much Willpower they require without hovering over the bar (extremely clunky in fights) and that my spells remain the same colour etc even if have insufficient Willpower to cast them.
Cooldown skills properly grey out and show their respective timer, spells and attacks which require ressources should do the same imho.

Cheers!