I'm not too certain that will be an option. And even if it were, remember, we're talking about one signal in relation to the quality of a TLD. There are many others. Link networks are easy to detect so that's really a no brainer for Google and the others, hopefully. ;)
No need to prove it to me, I believe you. I never said that the domains could not become poisoned. I'm referring to out of the box levels of trust that other TLDs do not get.
And then, if that site is what it should be, an institution providing some level of education, then it will need to maintain that level of trust or it's going to fall prey to the algo just like any other TLD.