When reviewing events within the website, I generally want to look at what is going on in Prod or what is going on in Stage. I generally don't want to see them together. I wouldn't mind seeing something where I get to see # in Prod vs # in Stage, but I usually need to be able to know and address what my Production system is doing more importantly than anything else
Good news! We have something big on the roadmap for exactly this type of scenario where you want to see the events based on the place they are happening (e.g. this application running in production) not just because it's the application. We'll come back with more when we're ready to break cover with the feature.