The ability for me as well my team members from different locations can see exactly what I'm doing at any given time in realtime! This has been extremely helpful during our Sunday morning services when we have people who are not able to be physically present due to their work schedules or transportation issues.
In order for everyone else to also benefit it would help if they could view this feature but that's just something i think about sometimes haha. We use givecentral live while having small group Bible study sessions so that many of us across multiple states all over North America (and even outside) can participate together without actually being there with one another face to face.