No weathered Brittania?

Depends exactly what you want. One of our members had an 'Anzac' at the last show which was weathered - early crest, though.

Anyway, if you buy a clean one you can weather it yourself - far more individual (not to mention satisfying).

It could be an oversight that might be changed before the models are released, i notice from the description they don't even know what detail features they are going to have yet, where it says detail it just says in abundance or extensive!
You could suggest it on their website forum though whether they take much notice other than vetting messages is open to debate.