I've been thinking...

Darkcoin created its brand on the promise of anon technology which was not open source (lets not discuss now how well it actually works, its not the issue).

Since navajo is open source, if the tech works as advertised, won't it just get adopted by those other heavyweight coins people know about?

So in the end, after a few months, it will be a core feature everywhere. It might not be enough time for navajo to become as well known as the big guys.