@Esper :
Don't ask too much mobile is not PC power (Audio filtersn Occlusion etc ...)
Browser support ? mobile games play on mobile OS , not on some Safari Browser ??
Video is not so necessary on mobile games, you can make great introductions without video.

For 3DGS , there are already big planned features that takes lot of time from lot lot of time (vegetation editor etc ...)
Mobile will only make these forecast features taking lot more time.

But i agree Android support would be great