In his latest post Phil Sturgeon makes a request of the PHP community - to "send PSR-0 to to Standards Farm in the Sky". Or, to put it another way, deprecate it in favor of the more recent autoloader handling of PSR-4.
This article attempts to convince you that deprecating the PSR-0 auto-loading standard in favor of the PSR-4 auto-loading standard is not only a good idea, but a problemless wonderland of happy benefits, in the hope that when I try to get this done on the FIG mailing list, people will be happy about it instead of sad or rage-mode. [...] I believe it was talked about as an alternative at the time because we knew that the PHP community would drop their collective bricks if we tried to pull PSR-0 out from under them, right as they were just slowly getting used to using it.
He covers a few different topics and his opinions on each including the "hate" for PSR-0 (for wanting to get rid of it) and why it should even be considered for deprecation in the first place. He also reminds readers that he's advocating the deprecation of PSR-0, not the removal of it as a standard. It can still exist and be used but it will no longer be the "moving forward" method of autoloading (in favor of PSR-4). He also comments on the large user base out there on PHP <=5.2 that wouldn't be able to make the update to PSR-4 and a suggestion to projects wanting to encourage the migration.