Inspiration doesn't give any SP advantage, and only allows for one lvl 4. Also, if you get hit by shade, you're stuck with a T2 lvl 3 max anyways. Jewel protects against T1 Shade and allows for at least one lvl 4 unit and a lvl 3-4 to be pumped out in succession in the following turns, regardless of getting hit by shades (assuming a +2SP 1st soul).
Defective runs into trouble if it gets killed before it moves or gets returned, especially if you are running something like Lucia-Assassin. It does allow for an extremely quick deployment for files that have Lawtia when it works though.





