The ability that it has helped us build out several different campaigns over time with various client needs/requirements - all within one system! It's been so easy to create custom reports (or even just search through existing ones) without having multiple systems open or jumping back & forth between them each day. I wish there was some way we could have used this before creating many new templates; but now not really looking forward going backwards when using other tools like Photoshop etc. We love being able to keep track everything together easily instead of tracking down spreadsheets everytime you need something changed up later on.