Hallo Yaro,
"bantime.multipliers" is also a good idea (could be a bit faster), but with a formula I'm more flexible, I can add "multipliers" as a optional parameter, if it set - it will be used instead of formula.

About the "findtime": I have changet it for restore ban tickets from database only, because the "bantime" is dynamically now, by restoring tickets from database we should use the max long time.

About "Restored" tickets - are tickets restored resp. loaded from database (by restart/reload fail2ban) - it forbid to add ticket to database again (and therefore does not icrement a bantime and bancount).