The whole point of C2 at the beginning was to help make good, complete, polished browser games without any plugin, and to go beyond what browsers games tends to be because of flash itself, having a swf exporter would likely nerf the performances, reduce the possible effects, have a lot of trade-offs and incompabilities, require a plugin from the user, and is just not worth the effort. If you really want to have a flash game, I ve heard quite a long time before that an swf wrapper for html5 existed but I still don t see the point nowadays (I think they were made when html5 was all new, webGL wasn t a thing yet, and all that stuff), whereas now, embedding an html5 game inside a flash player is just pure nonsense IMO.