Percy's gameplay hasn't changed much like other units and neither has his sigil needs. Quick Cooldown and Cascade are necessary in pushing out more skills for faster Schlacht's. Wrightstone was a but cringe all things considered and further optimization can be made through getting a better sub stat on Lord's procession+ as well as condensing Quick Cooldown and Cascade onto his Supplementary Damage Sigils.
No this is not Kweasallia playing, she doesn't like playing men.