I had a manager in the late 2000's who was giddy with the possibilities of HTML5 "It can do everything we do with flash!" Whilst that may be technically true, in practice bloated libraries like D3 are required for even the most basic vector manipulation and coding every tiny detail of an animation feels like groping in the dark when there used to be a source of illumination.

I'm not sad about the demise of Flash, but I think there is a gap in the market for a more graphical keyframe based approach, where things can be rapidly prototyped, resulting in clean code.