I agree with perhaps minor adminshops for things like wood and sand, so the server can keep looking spiffy, as a placeholder.
As a township depth enthusiast, I hope Townships get features back from maps like Valorium. This does not only include trade structures, which have been confirmed, but also things like sand quarries and tree farms which were highly efficient.
Admin shops should serve only as a placeholder until those things are implemented. I am not a fan of admin shops, it takes away from player interaction, which leads back around to the global market controversy. Keep the items sold to a minimum, and only to prevent wilderness grief.
And, please, do not sell items Alchemists can make. Alchemists need work, too.
As for what should be added....
All diffrent wood variants, sand, and hardened clay are some suggestions.