Sorry for not weighing into this debate up until now, had to finish my Matura/Austrian A-Levels this week and am still preparing for the acceptance tests to enter university.
Now, let me just utter my opinion regarding the proposed new titles for the project in consecutive order:
Sounds, like @entr0py mentioned a bit generic. I feel like the name for such a project should carry a certain intrigue in it, if you understand what I mean. A bit of depth even. However, I have to admit that I really don't have much experience when it comes to naming things, so you may take this (like everything I write) with quite a grain of salt.
I feel like, while I personally would enjoy such a title for a security centered project, Whonix wouldn't be the one. Keyward/Keybond, in my opinion would fit well for a password manager, however Whonix is (at least in my eyes) more versatile than such a title would hint.
I see what you mean, however when it comes to a "secure" OS, having a generic title has the potential to be more detrimental than in other areas, for the simple reason that pretty much every Linux distribution has in some way written security on its flag. Having a name like "SafeOS" would potentially get people to presume that Whonix is just another distribution based on Debian which includes the TBB and is amnestic,
I actually feel like being married to the classic "Word + OS" concept does limit our freedom in creating a new name quite a bit, don't you think? Having a name like Whonix (without OS in it) mustn't be negative.
Well, us Austrians beat you to it there: https://www.a1.net/handys/wertkarte/b-free-tarife/s/wertkarte Would thus be problematic, both legally and in regards to SEO.
I feel like those three could be quite a good start.
Cares a rather negative note, thanks to Adobes Flash beeing quite an easy way to compromise a system.
The thing is, and this is my personal conclusion when it comes to this whole debate, that, at least from my perspective, non of these titles really is able to solve, what in my eyes, is the most glaring issue of the current name (Whonix), the fact that no one understands what it is about when just getting the title. This is not just, as @Patrick mentioned rooted in the fact that, unless you are really persistent in the way you pronounce it, Whonix does tend to sound quite a bit like Unix, but rather in the fact that nobody understands that Whonix is supposed to mean "no one" (as in no one can track you, etc), a potential reason being that, at least in English, "nix" isn't that popular of a word, as far as I can tell.
That is why, I fell like the two previous names of Whonix, "TorBOX" and "anonymous operating system" are far better than Whonix, for the simple reason that when bringing it up in conversation, most people will have at least a crude concept on what is meant. Now, the frist name had to be abandoned because people apparently mistook "Tor" and "TorBOX" for eachother, while the second one seemingly made problems SEO wise.
So, what to do here? Well, I'd argue for using an acronym, similar to "Tails" which stands for "the amnesic incognito live system", allowing for both an interesting, as well as telling name. However, as mentioned before, I don't have experience or extended knowledge about such things as naming a project, so you may take anything I've written up to this point for whatever it's worth.
Have a nice day,