I try avoid optimizing FSRS parameters too often, especially since some instabilities were reported when parameters are optimized only after few reviews. But I also don’t want to mentally keep track when I last optimized them. Would it be possible to add some text or tooltip for the parameter field displaying the date when the parameters were last optimized (or changed manually)? Of course the metadata should also then be stored somewhere in the first place.
I also recently thought it would be nice if Anki stored the parameters. I was planning on doing it myself as well as graphing the performance(RMSE/logloss), but it would be cool if I didn’t have to by hand. Having a history of your parameters be remembered might be nice.