First, I don't want any karma from that. Playing Diplomacy on LessWrong was fun, and I feel enough rewarded by my survival until the end. The karma system, despite its occasional non-standard uses (polls...) should remain what it was designed for: a tool for maintaining high quality of discussion.

The decision between Discussion or main should depend on the number of interested people, and the fact whether some more general rationality-related insights were gained. I don't have any particular preference.