Rep 13 Valk (as of tonight), and I played her for the first time since S5 launched (other than fooling around to get the event gear pieces).
I notices two things that have me very concerned:
1. The dodge light attack effectiveness seems to have been nerfed. I have vids of me seemingly whipping around opponents with the side dodge light attacks, avoiding their attack entirely while I score a hit; I would use it to dodge and stab like a PK or Glad. Now it barely seemes to move the Valk and dodged not even one attack I don't think.
2. Not sure I can explain this correctly but, it feels like the Valk is designed to lose out on equaling situations. Ex: Glad and I both do a jumping lunging light. I can see my spear in him but I get hit and he is unscathed. Now, I know this could just be lag, but its also just an example. It felt like this for the entire 1.5 hours I played.