We would like to set censorProjectWarnings for all packages in our monorepo (and probably strict: true at a later date as well)
As far as I can see this isn't currently possible? We can only set censorLibraryWarnings in workspace.buildOpts.

What about having something like a "base" package section in the workspace spago.yaml that could specify things like this that would apply to all packages by default, like build.strict and build.censorProjectWarnings?

Sub-packages could always override it later in their own package spago.yaml files..