When someone plays your world, there’s a good chance it won’t be the first game they’ve played. And people who play games are used to numbers starting low and going up. Qualities that start high and then count down are confusing – especially when they’re mixed in with qualities that go up.
And the quality change messages in StoryNexus have been built with the assumption that status qualities will generally go up rather than down as things progress. So you should usually have your qualities count upwards.