I am in the Product Manager for Photoshop Elements (International Markets).
At present, Elements ships on Mac for French, German and Japanese only. This decision is guided by the demand and usage statistics for each locale.
As of now there are no immediate plans to extend Mac for other languages besides what being offered. However, we have taken note of this feedback and will keep that into our due consideration.
If you have still questions, please do not hesitate to let me know.