Load balancer in front of every server

We decided to use LB (or ADC nowadays) in front of every service we publish to internet even if there's only single server. Idea being that we can use WAF and have greater visibility to the services.

I'm wondering whether we could extend the idea to every service we run from DC (except maybe for AD etc.). For the same reasons, to get better visibility to the traffic and see whether it's the network or the server that is slow.

Anyone done this kind of setup, or any ideas?

Thanks!