It looks fiddly for constant use, but if it were toggleable, provided it's quick to invoke (and difficult to accidentally invoke) it'd be great for the situations where small links are a pain. Note that in this case it has to be less effort to invoke than a zoom action.

I'm not sure how much people hate animated gifs but you might want to consider adding a larger one, because I didn't get how the basic operation of the mouse cursor worked until I watched the video (the descriptions and static graphics didn't really explain much to me).

Also maybe make it a bit more obvious that it's android-only on the front page.