Render leisure=park differently depending on size / zoom level

[Adamant36]

As things currently are small city parks currently render at the same starting zoom level as much larger ones, z10. Although, they are almost impossible to make out at that level. Let alone even z11 or z12 most of the time. Often times if they can be made out they are just unnecessary clutter. My suggestion is to render ones that are below a certain way pixel area (or whatever it is) as the residential landuse color. Since they are normally always part of residential areas anyway and it would help things look a lot more seamless. Especially at Z10 and z11.

[imagico]

That idea would conflict with #3670 - which renders parks as vegetation-low at low zooms.

In general way_area based rendering decisions for the landcover layers don't work because it is common practice that you can split continuous areas of the same landcover based on logical/formal or even arbitrary divisions and you would end up rendering parts of a continuous area different from others.

Also keep in mind that parks are not necessarily in urban environments so rendering even smaller ones like builtup areas can be fairly misleading:

https://www.openstreetmap.org/relation/3705275
https://www.openstreetmap.org/relation/10108841
https://www.openstreetmap.org/way/33142040

[jeisenbe]

As mentioned above, #3670 would solve this problem, though not in the way suggested, by rendering leisure=park areas the same as most of areas which are covered by vegetation, starting at z11 and lower. The color would be similar to @grass, also used for gardens, meadows, etc. - I consider that to be a better solution to the problem.