Are you a DNS guru?

I'm doing some research on DNS evolution and would like to understand how (or if)  DNS is changing within mobile carrier networks.   If you work for a mobile carrier and can answer the following questions, you are a DNS guru and I want to hear from you!   My questions:

1. What DNS solution do you use today?
2. What do you use to manage and monitor DNS (e.g., CLI, 3rd party GUI tool, homegrown tool)?
3. Do you currently plan to protect the DNS with any external security mechanisms such as IDS, firewall, DPI, etc.?
4. Do you expect the deployment of 4G/LTE networks to impact your DNS architecture in any way?
5. Will DNS take on the same, more or less importance within your 4G network?  Please explain.
6. How important is a day-to-day management interface vs. CLI or some other programmatic interface?
7. Who in your organization manages your DNS servers (e.g., System Admin, DNS specialist, Operations Manager)?
8. Overall in regards to your network, what you keeps you awake at night?

 Thank you for providing your insights!