Nami seems like a prime candidate for good ideas on the front of skins.
Here I just came up with one now
reverse nami:fish head, human lower half
oh and another
whale shark nami: huge whale shark mouth, eats fizz's ult with improved mandible.
hey I'm on fire
glowing jelly nami: she is the jellyfish that light up all epicly in the deep sea. Would be invited to arcade sona's raves.
here is a cheap reskin option
yellow tail nami: just looks like a yellow-tail tuna, the prized tuna of sushi....I bet nami sushi tastes good.
I could go for any new skins for fish lady.