I think we are missing something...
What does it matter what the site name ends with? .com .net .org .sux whatever...
I assume that English is your native language? Or not?
I, personally, think that if you have the time and resources to build your own .cc.zz or whatever then more power to you, but I do not understand why you or they would rather be a part of your site rather than the hq because the hq ends in .com
???