interesting thoughts, this is something i have been waiting to come up for some time already. However, i still miss that you credit more than one marketing partner (the one with the last click) with a profit share. Only this will ultimately show the tail's real weight. Andreas (and other german speakers) might want to read a discussion (in german) i tried to bring up about this issue some while ago: https://www.openbc.com/cgi-bin/forum.fpl?op=sho...
Would bei interesting to know if somebody shares any of these ideas.