@Grmacjon-MSFT We are very interested in this.
The current limitation is that when you create a Static Web App, you must select a "Region for Azure Functions API and staging environments", right now the only options are Central US, East US 2, East Asia, West Europe, and West US 2.
If there is any way to add Canada Central as an option, that would be a game changer. It's not about performance, it's all about compliance for us. This is a blocker.