Hi! Thanks for the suggestion! We are currently working on adding performance metrics for survival analysis. The ones first on our list are the Brier score, the integrated Brier score, the concordance index, and ROC AUC. You can follow the progress in the development version of yardstick!
I will also say that we are very close to getting the whole of tidymodels working with event time data (to the point where I've written the draft blog post).
In the next month or so, we'll do a cascade of releases with all of the functionality and guides on how to use it.
Thanks Hannah and Max for your replies! I am Watching the Yardstick github repo now and look forward to learning more about using tidymodels to analyze time-to-event data!