It'd be nice not to have all API function tied to some context object. Right now, since the API is context-based, it more or less makes sense, but, for example, in Metal we aren't tied to context objects (or, IIRC, event to a device object) so much. We can create buffers, shader libraries and textures w/o need to explicitly reference a context. Necessity of passing gl context sometimes creates not so nice constructs in code (for example, three.js).