I am the head of Monitoring and Evaluation for the Global Resilience Partnership. I do believe that there is a need for an integrated Platform on resilience measurement, especially as there is now a proliferation of methodologies, and consequently knowledge management platforms, communities of practice and useful information risk being drowned out due to a disproportionate number of channels. However, in order to have a product that makes the difference, it has to be practically oriented and interactive, making it possible to talk to practitioners (in particular in the field) to capture the knowledge generated by practical applications.
Another point is to make sure it is linked with other similar initiatives (but not only) in a consistent way in order to guarantee a rapid update and exchange of information.
On the FSIN, I think they have done a wonderful job with the Resilience Measurement Technical Working Group and it would be really helpful to continue this work. Something to improve: visibility and inclusiveness (more actors in the discussion).
I hope this helps.