User blog comment:JmLyan/Sesero, Sage of the Three Paths/@comment-24170284-20131115223235/@comment-7481207-20131117095227

Path of Trcikery is for reliability over raw damage, letting him hit his spells far easier, especially the otherwise walk out of ultimate. I'll reduce the power of the others a little bit, but the Path of Trickery is still useful i would say.

As for choosing path when an ability is maxed rather than getting the one you max, that would remove the tradeoff involved in choosing other paths than power. Everyone would just level Q (support Sesero's might level W) and then just choose whatever path they want.