Just tried SnS this weekend. This is the easiest-to-use FE code I have every tried. I have a couple of suggestions (enhancement requests). I believe some posters have already alluded to this, but how about:
1. A section view for stresses/displacement so that you can view field results inside the part (maybe an offset plane parallel to one of the coordinate axes?)
2. The ability to query the numerical value of stress/displacement at a topological entity such as a vertex (One could even envision result quantity values being displayed as the mouse rolls over certain topological features).