It sounds like you would like to be able to read state or similar in a lambda (we don't currently allow this)
In a populate lambda, you do have access to
Entity Data (https://fusionauth.io/docs/apis/entities/entities) (entity.data)This means that you can set any custom field you would like on your entity and use that in a populate worklfow .fetch() https://fusionauth.io/docs/extend/code/lambdas/#using-lambda-http-connect
So you could access custom data attributes or call out to another system in the lambda
If you have access to a support contract, you can also log a support ticket if you would like or open a feature request outlining your requirements
https://fusionauth.io/docs/operate/troubleshooting/technical-support