The main problem with analytics/metrics is that they're all useless - or very close to it. Each of them is horrible about getting data out in order to correlate it with other services.
If segment.io can consolidate metrics data, provide uniform interfaces for getting data in/out, and can start partnering with other services that should be using this data but can't (there are several dozen), they can turn useless metrics data into immediately (possibly automatably) actionable data.
Just a personal vision, and I have no idea if that's where they're goin or not, I just know that needs to happen, and the team behind segment.io has the chops to pull it off.
You might want to check out our service, Klaviyo, and specifically https://www.klaviyo.com/features/integrations. We do exactly what you're describing around connecting your data with data from the all services you use. I definitely think it's the future and the future is coming sooner rather than later.
I also agree that metrics are not nearly as powerful if you can't tie them directly to action. Which is why we built our own, fully featured email solution so you can go from metrics, to important people to engagement automatically.
That's where we think things are headed and it's going to be incredibly empowering.
The main problem with analytics/metrics is that they're all useless - or very close to it. Each of them is horrible about getting data out in order to correlate it with other services.
If segment.io can consolidate metrics data, provide uniform interfaces for getting data in/out, and can start partnering with other services that should be using this data but can't (there are several dozen), they can turn useless metrics data into immediately (possibly automatably) actionable data.
Just a personal vision, and I have no idea if that's where they're goin or not, I just know that needs to happen, and the team behind segment.io has the chops to pull it off.