Hey ZOS: The map is looking really cluttered right now!

All those houses - it is nice that your own house shows up on the world map, but very few people are going to buy all the houses! The greyed out ones are useless to us.
(Not my picture, btw: I am posting on behalf of someone who can't get onto the forums right now).
Currently houses are considered wayshrines in the API, so even though it is possible to write an addon to hide them, it would also hide all wayshrines! That wouldn't be good.
It would be amazing if, in a future update, you could add an option to filter houses separately from wayshrines, or even better, only show purchased houses on the map. Even just classifying houses separately in the map API would be enough for us PC users, although I'm sure console users will have the same complaint!
Please - save the map from never-ending clutter. Give us some filters!