I never understood why the Super 12/14/15 is played earlier in the year than the NPC. Surely it would make sense to play the NPC in Feb-May and then the tests, and then the top few teams from the NPC go into a Champions league type tournament with the top Aussie & South African teams in September/October.
Nice one - I had similar thoughts.
What's wrong with "steamers" ? It's the perfect description for a pile of dung!
You could go one step further and call them "stanleys", as in stanley steamer, à la Roy & H.G. As used, for example, in H. G. Nelson's sign-off when calling the state of origin:
"So it's good night from us from the island in the sewer which is rugby league, which every year promises the youth of Australia so much, and ends up delivering a uteload of stanleys."