Not that I need to tell you, but there are several things in your network that you could have better control of. Whether it is consistent application of security policy or consistent configuration of servers, or even the setup of network devices, they’re in there, being non-standard.
And they’re costing you resources in the long run. Sure, the staff today knows exactly how to tweak settings on each box to make things perform better, and knows how to improve security on this given device for this given use, but eventually, it won’t be your current staff responsible for these things, and that new staff will have one heck of a learning curve unless you’re far better at documentation of exceptions than most organizations.
Sometimes, exceptions are inevitable. This device has a specific use that requires specific settings you would not want to apply across the data center. That’s one of the reasons IT exists, is to figure that stuff out so the business runs smoothly, no?