I was thinking it would be nice to optionally integrate FitNesse into WET in the future.
FitNesse (http://fitnesse.org/) is an open acceptance testing framework that is driven by wiki pages and tables within.
The benefit is tests can be executed directly from FitNesse and it produces summaries of results based upon assertions.
FitNesse also has an API so that tests can be executed in 'batch', or be scheduled to run.
The limitation of FitNesse (I believe) is it doesn't have a good way of displaying a history of results.
I think there has already been some effort getting watir to work in FitNesse called 'Faucets' (http://faucets.rubyforge.org/)

Please feel free to comment on this issue whether this is a good/bad idea, and whether it is something that would suit the vision of WET.