If it was an automated rollback, a system that automatically generated either test data or other heatmap of the system when the rollback was called would be awesome.

It is amusing, because we are basically saying it would be awesome to have a coredump when the crash happens. Which... used to be standard behavior but was essentially lost in most modern development environments. (Not to mention the tooling lagged in two directions. One to help you with the coredumps, and the other to make usable core dumps.)