34 years ago I had an R100RS just like the one in the picture and my wife was much the same shape as the girls. I have had half a dozen BMW's since then to accommodate my aging frame - and still the same wife; shape modified also. The 1200GS suits us in our presnt form!
Just fit engine bars for when you drop the bloody thing and forget everything else. There are too many GS's that look like an advert for a parts catalogue.
Engine bars / protectors, front mudguard extender, rear mudsling and whatever else you want - it's your bike, your money, make it your own......and sod everyone else
Ride it and enjoy......