if i need critical i put full luck, the same with lockpiker. In my opinion if u make a char, do him best in one thing not just good in two. If i make a crafter i dont use a luck, but a power build for crits need it full. U can always make a power build with brd and mbrd, and set luck on 1. Just start to use more chars, in this sesion u can use fast relog;)