I know that there is a lot of concerning about how is the SP right now. It's quite impossible to compare to other classes, and we still waiting for some important changes on 8.1. Anyway, we should still doing our best :P.
I have been checking recently SimulationCraft for SP regarding the Azerite traits, but the passive traits are not 100% implemented yet to do a decent comparative. Have someone started to give it a try already and test which traits give us the best benefit?