I definitely used it as a DNS server internally and a few of the other functions. I was totally bummed to see them strip effectively all useful functionality from it. :-/
The payment industry as a whole is in the stone age.. ignoring the antiquated technology behind it all there are still a ton of industry discussions about even allowing now-legal medical marijuana dispensaries and things like that to become customers. Given that it all goes back to Visa/MC/Banks I don't expect it to change much soon.