Interesting. This problem is tractable with better software, and it seems to be well within the capability of a single developer to solve. (Make a dedicated beta client which automates all the stupidity for the end-user, including sniffing GUIDs, downloading your distribution, and reporting errors to you, and a web service for the beta clients to connect to to grab apps, report errors, and <i>cough</i> ensure that your customers succeed in paying for your application.)<p>Unfortunately, while it is software that saves people pain (a plus) and helps make people money (a big plus), it is also sold to developers (ouch), most of whom are hobbyists (double ouch), would have to cost an awful lot in comparison to what <i>they</i> charge for software (triple ouch), and requires Apple to remain clueless or else your investment gets vaporized with a patch.