So what exactly is the problem with owners of 13 meter ships wanting
to hold contests?

There is a new generation of short wing gliders that are totally
different:
with modern materials is now possible to built light weight
sailplanes,
shorter wing span and good L/D ratio that can climb better then the
others,
but at high speed they have no polar, they sink like stones.
They are fun to fly, safer to outland, easy to rig.
They are truly a class apart.
Of course they do not go very far because of the very light weight.
Up until now the new classes and regulations were made up for new
sailplanes to go faster, impress with longer distances, etc.
I believe this the intent of having a new class for fun to fly,
easy handling gliders.
Possibly much less expensive!!!!
By the way, what is the lowest price of a brand new glider today???
If you want soaring to become more popular and affordable, do you
think that new machines in excess of 150000 dls is the way to go?
Look at delta, there are so many around because they are cheap.....
Soaring is becoming more and more expensive and going light should
make it more affordable.