There's a helpful feature on other BG sites which shouldn't be too hard to implement.  Normally the dice appear in a certain order, and the first checker you click on is moved the number of points shown on the first die.  Here, if you want to move the second die first, it is necessary to first click on "swap dice".  The requested feature is this:  If you click on a checker and it cannot be moved the number of points shown on the first die, then it is moved the number of points shown on the second die instead (if possible).  It's surprising how many clicks this would save.

Thanks!