Betrayal is the obvious choice, which will allow you to immediately leave with the cost of losing your school-specific identity, titles, internal skills, fashion... you get the idea. In trade, you can join any of the seven other schools or one of the new sects launching with the next major update. The Excursion route still takes your identity, titles, and fashion, but your internal skills are merely lowered. Incognito takes this a step further, merely locking your titles and such while leaving your first three skill slots unaffected. These latter two options allow you to explore the new sects with lesser consequence, but both are meant to be more costly and time-consuming. It's up to you if you want to continue to be loyal or start walking the path of betrayal.