“Die See” is only an exception. It’s origins are in the Platt languages bordering belgium and the netherlands iirc.
Don’t we talk about the usefulness of gender articles? There are some outliers. Adding gender articles increases the vocabularies by a factor of two but at what cost and what’s the real advantage? You can simply invent a new word for one of the “Bands” to reduce ambiguity in order to decrease the complexity of the language. I think you can compare it to irregular verbs. Those are just there for historic reasons, they don’t really serve a real purpose. Du/Sie is another example. It may be useful in some cases to maintain distance. Moreover we should get rid of the corner case “royal we” asap! Etc. The sooner we start the better.