@Purekustora Not like you need a guide for FL grinding - it's mainly just downloading the "FL Practice Diff Maker" from github for easier map breakdowns plus practical tips and FAQs to make grinding easier
my two cents on fl pp is that attaining the required buddha mental to fc hard maps is a skill so grating basically no one bothers and i don't really think the situation would change much if the pp values were doubled, other than the current players being even more active