Hello,
The game shouldn't take long to load at all, unless you are waiting around for the web version. The web version is simply a fun little thing to play around with, and will not load the actual game.
Hope this helps
Unfortunately, that isn't possible. The game already experiences lag when playing a native executable, so the performance on a browser would be significantly worse. In addition, the compiler for the browser will cause the game to behave very differently than to the native applications. Also touch support and screen resizing would become issues, and with the launch of Steam, these would just be distractions.
Hope you understand.