I haven’t been able to go through all of the post history, but please leave an option to continue using the current SRS system if you add FSRS. Long story short I have found that FSRS doesn’t work well for my particular study habits, and it certainly wouldn’t work for how I like to use Bunpro personally. The existing functioning of the website suit my workflow perfectly.
Just wanted to add that data point. I know giving customers more options can be confusing, you can hide it in some preferences menu, as long as I can keep using it I’ll be happy.