Be neither fish nor fowl phrase
Not one thing or another; not something fitting any category under discussion
I feel your suggestion is neither fish nor fowl.
His new fashion collection is a fusion of tradition and modernity, neither fish nor fowl.
This phrase is used to describe something very modern or updated or something that no longer looks like what it's used to.
It has been a long time since I left my high school, and now I have to admit that it's certainly not your father's high school anymore.