Valid request. It is even more pressing in the Sites 9 where Region Schema does not have its own icon either. Couple of qualifying questions:
- How often you have schemas of different types in the same folder (and of which subtypes). I'd assume that, for example, Parameters Schemas would be stored next to templates and not where Component Schemas are defined. On the other hand, Embeddable and Component Schemas, probably, defined in the same location.
- CM shows schemas in quite a number of lists, fields and drop-downs. Would it be enough to show customized icons in the main list view only?