Looks great but the API itself doesn't seem very innovative (which is probably not the goal anyway). I'd personally be interested in a graphics API that do not

Looks great but the API itself doesn't seem very innovative (which is probably not the goal anyway). I'd personally be interested in a graphics API that do not try to render the whole buffer every frame, but update it given a list of changes (e.g. sprite moving/rotating). I believe that such approach could work very well for a 2D software renderer given the likeliness of spatial redundancy, and possibly for video encoding without going through a clueless encoder querying pixels (and having the ability to exploit hardware efficiency to decode/render the stream).