Verno: You think the old release system was a nightmare for add-on developers?! I'm struggling to believe that you can actually think that the new system is an improvement.
Add-on developers had some basis for specifying compatibility before. Now that the versions mean absolutely nothing, how are they supposed to have any idea about which future versions of the browser their add-on is going to be compatible with.
It looks to me as if most the those devs are now setting arbitrary future version numbers as being compatible with their add-ons, because even though that might not turn out to be true, it's better than the add-on breaking every few weeks when Mozilla releases a new version. One of mine says it's compatible up to version 99, because the author obviously doesn't have the time to be dealing with this nonsense.