Wow, just wow! This was the only thing making a thrower viable (even then only against poison immune mobs) and you officially KILLED it! What a bozo move!
If you seriously thought the damage was too high, why not reduce it instead? Lets keep in mind here that shuriken users have no way to bypass most of the DR mobs have, or what they would do against poison immune mobs. Reduce the damage of ninja poison if you have too, but make it work against ALL mobs!
Use your head Devs!
P.S. honestly what is the new named shuriken good for? Fighting zombies and wraiths? (But not Shellie's due to DR). What a piece of utter crapola!