I myself don't use it, so I want to suggest just make it as an addon. Thanks @eva2000 ;)
Yeah I don't use it myself, I use DNSMadeEasy instead. NSD is really something left over from original Centmin script that Centmin Mod was originally built upon.
Maybe time to remove it. I didn't notice people asking for support about NSD instead they are asking how to disable it all the time
Posted about it on my blog at http://vbtechsupport.com/1395/ basically for speed, performance, and high uptime availability
Took my sites down for several hours until I was able to switch to their back up DNS system. http://techcrunch.com/2014/02/20/namecheap-ddos/
Yeah February this year. There was a WHT discussion about NameCheap's downtime at http://www.webhostingtalk.com/showthread.php?t=1349439
DNSMadeEasy is #1 http://www.solvedns.com/dns-comparison/ - namecheap doesn't even make the list for speed also test your nameservers at http://www.solvedns.com/nameserver/ i.e. for ns10.dnsmadeeasy.com http://www.solvedns.com/nameserver/ns10.dnsmadeeasy.com
If using Cloudflare for DNS only then no problems, but if you want to use their CDN/cachinge be sure to setup Nginx side as per http://centminmod.com/nginx_configure_cloudflare.html