So, which is better?

I've thought more about this whole thing. Go figure. Would it be better for one consistent seed for a week or should there be a new/previously created and worked on seed every day?

So some days are spent on building a new PVP seed, other days a different seed is hosted for other purposes. Like a seed made specifically so that everybody who joins can get all the achievements in a couple of minutes? Or for those who care, a role-playing seed to act out whatever they choose? A seed made just to try and recreate landmarks or simply amazing builds, like recreating Las Vegas?

I don't know which is better.