> Once you've got a few logographs, it becomes apparent immediately that you can't extend that approach to everything you can say.

The converse is just as true. Not all things you can think, you can say. I remember sometime in my teens realizing that my thoughts are constrained by my language, an epiphany that sparked a life long interest in language. Now some 30 years later, I feel that I can feel ideas that I don't know how to express, but not for lack of language. Rather, some ideas are too complex for our simple speech. Just as a dog would be unable to bark the idea "energy is neither created nor destroyed".