Hi,
Unfortunately, Arup's REDi framework is proprietary and it is not as straightforward to make it available in open-source software as we were hoping earlier. We are working with ARUP on a solution, but I am not sure when and if we will find one. In the meantime, there are several researchers in the community developing other approaches to downtime estimation. Those will be publicly available and we plan to incorporate them into the PELICUN framework as soon as they are ready.
As for your contribution, please send me an e-mail (adamzs@stanford.edu) so that we can start a discussion on the features you are looking for and could perhaps add to our tools.
Thanks you!