[quote=@Yamet]
Also, dumb question but if faith powers the gods, does that mean that the communicators of gods from Shinto be generally stronger than the rest due to Shinto having a relatively large following? 
[/quote]

No. While more people follow the Shinto faith than the ancient Greek polytheistic one, the idea of this loss of power is more heavily attributed to a general shift by the public away from a religious focus on life and more towards a technological focus. Among other things, which'll be explored IC, and the fact that having one pantheon clearly outclassing the rest in power is a no-go. 

Welcome aboard, all! I should have the actual thread up soon, so stay tuned!