I sorely miss the shock absorbers that the cheapskate designers of my 1999 Avionic trailer wrote off as decadent western luxury. The road vibration on the first long haul eased the pins out of the tailgate hinges. I don't imagine that that level of jarring vibration is good for a sailplane.

I've seen shock absorbers on some glider trailers.

I would also like some sturdy tie down points on the corners for tieing the trailer down when high winds are a possibility. Presently I loop the ropes around the frame members but that is a hassle to thread them through lying on my back in the wet grass.