Mathematics and logic are more of a study of concepts than philosophy, highly contaminated by language and imprecision, could ever warrant to be.

(These are earliest branches out of philosophy by the way.)

Use of natural language makes most of the ideas entertained by philosophy highly ambiguous until they get formalized.

Even ethics can be strictly formalized in a more advanced logic system, making the ideas and applicability clear.

Or are we trying for something more complex, such as creativity?