Hi,
Pd-extended was so nice, but it is obsolete, based on pd-0.43.
Pd Vanilla is now pd-0.48. It contains a lot of super nice improvements for end users : osc messages, list and text objects, find externals (deken), zooming, font homogenisation, tclplugins, ... and a lot of invisible stuffs.
To build your Pd-extended, you have to know which objects you want and its container library (see previous messages on the list) and install them via "Find externals" feature. We've made a list of useful objects for instance (http://jeromeabel.net/wiki/pd/files/pd-extended-objects.pdf)
My christmas guess: a way to install a list of externals in oneshot for all platforms, it could be very useful.
To get round installing a lot of libraries in the Malinette project, we are trying to propose a bundle with pd and externals together : https://framagit.org/malinette/malinette-soft
Not the best way, but it could help.
++