At this point, I am not in favor of basing it on tier level. Why penalize the lower tier partner (me) because I decided not to join forces with a larger reseller like DSD or Blytheco? And how is tier level determined? Regarding affiliation with with a larger reseller, if the person is a W-2 employee of the larger reseller, then they would qualify for the DSD or Blytheco group rate. Othewise, I think they should be viewed as an independent for fee schedule purposes.
Membership renewal should also be based on participation. If you aren't participating at some designated level, you don't belong in the group.