And why not ?
md2 and other formats often make certain assumptions and are generally optimized for specific purpose which may or may not be what people want ..... the point being that POD is a very generic and rather simple format (frankly not much more than being a collection of serialized vertex/index buffers + some simple scene graph info) and also supports some GLES specific features.
In my case I use POD purely as a way to store multiple objects and almost completely disregard material/scene graph part of the format.
I think we chose to make our own scene format (POD) so that we had complete control over it and could add what we wanted. We developed the first version a long time ago and it did was required at the time and has done since. We are always open to feature requests regarding any of the file-formats we use.
It’s advantage over other formats is the optimisation our tools can add when creating it (a lot of this could be applied to other formats tbh) and possibly the flexibility that warmi is talking about. You can use it to store a single triangle or just an animation on it’s own or you can store an entire scene which more or less can make a demo on its own.
warmi and Gordon, Thanks alot!