Faceting is inconsistent and the process of identifying candidate contextual layers unknown

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1. The ORDERING of geospatial facets appears random (=dog's breakfast):
Uncertainty (in metres)
Sensitive
State conservation
State conservation (unprocessed)
IMCRA (meso-scale)
Local Gov. Area
State/Territory
Country
Biogeographic region
IBRA
IMCRA
Dynamic land cover
Vegetation types - native
Vegetation types - present
Spatial validity

2. NAMING of facets is inconsistent, e.g., the IBRA layers in the SP are named 
(Add to Map | Layers)-

IBRA 6 Regions
IBRA 6 Sub Regions
IBRA 7 Regions
IBRA 7 Subregions

but in the facets, you have

IBRA

So which IBRA is it? You could find out by mapping all the IBRA layers and 
checking alignment of points, but this is obtuse.

3. If the IBRA noted above is actually IBRA 6 Regions or Sub Regions, why is it 
still there when IBRA 7 supersedes it? Therefore, what is the process for 
deprecating facets? What is the process of identifying and 'loading' a new 
facet from a new contextual layer?

4. Ideally, a user should be able to facet on non-trivial (e.g., not single 
polygons of small extent, e.g., GER polygons) CONTEXTUAL non-trivial  layers as 
this is a powerful filtering mechanism.

Original issue reported on code.google.com by leebel...@gmail.com on 10 Apr 2014 at 6:58