[Tagging] service = parking_access for main ways on a parking lot

[Tom Pfeifer]

The qualifier service=parking_aisle was originally introduced [1] to
structure car parks with a few main access ways and lots of small aisles,
to avoid clutter in lower zoom levels.

It is highly successful with over 2 Mio uses.

The description says that, however "The main way(s) on the parking lot,
for entering and connecting multiple parking_aisle, should be mapped with
highway=service, only."

Apparently, mappers feel a void in tagging highway=service only, without
a qualifier, and add parking_aisle to all ways related to parking, thus
losing the structure.

Thus I would like to use a different qualifier for those ways entering
the lot and connecting the aisles, e.g. service=parking_access.

This does not break any consumer, is not used so far (ok, once, exactly for
the purpose), and also solves a recent question in the wiki for a related
problem, a separate parking road parallel to a main road.

Opinions?

tom

[1] https://wiki.openstreetmap.org/w/index.php?title=Proposed_features/service%3Dparking_aisle&oldid=391287
[2] https://wiki.openstreetmap.org/wiki/Talk:Key:service#parking_but_no_aisle