Theoretically it can be done though it has never been tried, as far as I know. It requires database edits. I think Dave's new flatfile editor can edit tensions, though I have not had a chance to play with it yet. You could give it a spin and see?
It sounds like fun, but not sure how long term strategies could be implemented, though if it was a short server with nightly goals it might work out OK...
Hmmm, it might well work on a long term server too, ya got me thinking about shaking up The Forge... I'll put it on my list of experiments... definitely an idea that is worth some thought.