As a Jasmer cacher (I had a double Jasmer before, and I must work a bit to have it back) I have two suggestions for add-ons to this badge. Now it can only be looped, technically up to 9 times, in practice the limit is 4 because of August 2000. And it has no micro-badges. The Jasmer hunters have two additional goals for this challenge, ones that can be rewarded with add-ons to the diamond Jasmer:
Physical Jasmer - Jasmer challenge done only by finding physical geocaches: traditional, multi, letterbox, mystery, HQ, APE, wherigo. So: no events, virtuals etc.
Jasmer Pyramid - this is tricky. It requires a player to find: one cache places in each month of 2000 and the current year (now 2020), two caches placed in each month of 2001 and the previous year (so 2019 now), three caches placed in each month of 2002 and two years ago, etc. So in 2020 the requirement is: 2000:1, 2001:2, 2002:3, 2003:4, 2004:5, 2005:6, 2007:8, 2008:9, 2009:10, 2010:11, 2011:10, 1012:9, 2013:8, 2014:7, 2015:6, 2016:5, 2017:4, 2018:3, 2019:2, 2020:1. In 2021 the requirement for 2011-2020 will grow by one (so both 2010 and 2011 will require 11) and of course the new year will be added.