I'm not quite sure what issue this is trying to solve, but this doesn't seem quite proper.
If we return nonzero in feature option TiledResourcesTier before support is complete, it will break games which use tiled resources only if they are supported, so it is still set to zero. When the tests are complete they will check the tiled tier, but in this patch series that would result in the new tests not running at all. I don't see a tidy solution to this. Perhaps letting it skip the tests is the best option.