Here's a simple idea..
Redo the crappy Throw command's listings.
Shurikens and Skeans need to be at the top of the list, then everything else..
It does not necessarily have to be listed as the default, but it would be helpful/meaningful...
The throw list resorting would be activated by some button (select button, X/Y/L/R, whatever)...
It could be sorted according to the following:
My previously mentioned suggestion (Shuriken and Skeans at top)
Most items at top
Strongest weapons at top