Is it likely that Valkyrie will get her own figure and be incorporated into the game? Not at all. Would I love it if the leader of the Valkyrior showed up? Absolutely. She can sweep me off my feet anytime.
Besides her abilities as a knight in shining armor, Valkyrie wields a magical swords... and, well... she's a valkyrie with all that entails. She's also an Avenger - really! Again, I think sword-wielding would be a fun game mechanic, assuming that Disney Infinity 2.0 won't add girl-kissing as a power.
Image via Fearless Defenders #1 writteny by Cullen Bunn with art by Will Sliney