The day datatypes become bidirectional, I'll be a happy man 
Reggae (MorphOS "Datatypes NG") will be bidirectional in a few coming months, API for this is being worked out. Of course not all codecs automagically, but the first steps in this direction are done already. Then I may consider implementing WebP decoder and encoder, but in my opinion it is too early as the "standard" is now defined in terms of early beta source code (instead of solid documentation) and poorly adopted in the IT world. Also remembering the story of failed JPEG2000 and failed JPEG XR hints to take some distance. While being the first is good from marketing point of view, it does not add much real functionality, and functionality is what MorphOS development is focused on.