Test Server

[worldofneil]

I'd be very surprised if they didn't have at least one test server, especially since they had one with FF XI (called Atomos). I did some Googling and it suggests that they have at least two test servers for FFXIV, Narshe and Zvahl, although that might just be for 1.0. Just because they don't show us the names of them, doesn't mean they don't exist (it's probably less confusing to not show us since we don't really need to know).

[Pence]

I mean....they literally could have just made a forum post about what Diadem was and we probably could have picked it apart. All it'd take is 1 day testing to show them how bad it is - along with other exciting new content like Sieze. PVP should never be subject to RNG.

And worldofneil - I missed 'P' (public) out of OP, sorry. There are no open public servers. There's bound to be internal test servers.