So `plt.axes(projection=crs.NorthPolarStereo())` is likely to become `plt.axes(projection=crs.Stereographic(90))` ... perhaps not quite as transparent, but it's not too bad. I wonder if a helper object/function/method would still be handy though ... ?

> There is a similar debate to be had about the OSGB and OSNI "projections"...

Good use of quotation marks. :+1: Cartopy Projection classes are really "maps", not just "projections", because they also define a boundary.

OSGB and OSNI also suggest a standard helper object/function/method idiom could be useful. (NB. This would require a way to specify the boundary definition when creating the TransverseMercator instance.)