On one hand, less grinding, on the other hand, less abortions/child killing.
Though is combat/grinding much of an issue if we set up a get-together and just run through everything as a group? I remember one rule of this game was that you were generally fucked if you were outnumbered.
Although, I'd imagine InfernoMOO is generally more up-to-date and well-maintained. That's certainly a plus. Though I checked their wiki and they seem to be missing certain mutations.. Shame.