I have an idea for cleaning out our lower level badges of exploration for higher level ones.
trade in two 1st order badges for one 2nd order
trade in two 2ndt order badges for one 3rd order
trade in two 3st order badges for one 4th order
trade in two 4st order badges for one 5th order
granted not everyone needs this but I have hundreds of leftover badges and they just sit there now with no purpose. this might be a way of using them up on something usefull even after you have mooved beyound the level where they are usefull.