HTML5 to CSS sculptur and other of your existing plugins.
As many users noticed - you have not updated your various plug-ins to HTML5 yet.
Now I have to go to your competitors and buy the corresponding functions. Had I been in your shoes - I would have given priority to this.
I am of course willing to pay a penny for this, for an upgrade price. But now I have to buy these functions from others, and then it may be too late.