Andrea suggested we do something like:
I think this makes a lot of sense. We could even have clients supply a list of srs's they care about srsProfile=limited,5543,5432 or something. Or even just srs=4326, as many clients will probably already know what projection they want it in?
If we have this in place then we can have ArcMap work much better with our stuff, we just tell those users to supply the extra parameter when they input the geoserver capabilities document in to their desktop client.