Pixie development has been very interesting lately. Jean Louis Leroy of Tangram fame pointed out that you can change what Data::Dumper uses to serialize objects (ie, use something else instead of bless) which made the clever-but-nasty bless trick go away. Further investigation into Data::Dumper revealed $Data::Dumper::(Toaster|Freezer). We have some fairly good ideas about how to implement locking using them.
pdcawley - brilliant as ever - has fixed Pixie so that there is no longer a need to stuff any metadata inside an object, it just gets magically tracked and handled. It also means we can store array based objects without requiring that the class it is created by implements a get_oid method. This is a Good Thing.
Most importantly Pixie is slowly maturing into something a little more pleasant to work with.