Isn't Val being super smart from a really young age considered a power?
That's just because she's the daughter of Reed. Franklin obviously got his intellect gene from his mother, as while he does have smarts (as Sue does) he definitely isn't on Val's or Reed's level.
Shes already smart to build gadgets to use so she doesn't need a super strong power maybe something simple like multi-vision (micorscopic, infrared) which shes able to see her mother even with her invisibility and it goes with her personality as a scientist.
I just like the idea of Val getting something from her mom other than her blonde hair....and something that Sue can teach her about better than Reed.