Now when most of the C++ value types of QtPositioning are exposed to QML as proper value types, we can improve the APIs that take QVariantList. They should take proper QList<T> instead.

For QtPositioningQuick-specific types this can be done as a direct replacement, because these are private headers at the C++ side, so we do not care about SC/BC.
However, it would be more complicated for public C++ types (e.g. QGeoPath and its path property).