Sounds like an appropriate capital case.
I don't remember any death penalty case discussed on this forum where you wouldn't think it was appropriate.
This case is hardly "appropriate", given that the actual killer didn't receive the death penalty. Disproportion in sentencing was a ground for a number of commutations since 1976.
The mastermind, if you will, is always the highest target for District Attorneys.......
That doesn't make it less arbitrary and disproportionate.
Going all out against the person who plots a murder is not arbitrary. You can argue disproportionate but sadly here we consistently plea bargain things to get the big fish, or simply any conviction.