I'm not familiar with Drupal, but I think I would rather have something more akin to Wordpress. Reason being I don't think there will ever be such a thing as "really good" that is applicable to everyone. Also, if we build a more Wordpress like system we can create an internal market around it.
Imagine being able to buy a "Community Skin" and having the flexibility to change it whenever you want.
It would give people something to spend their Hive on and the more things people can actually spend Hive on, the closer we get to a real economy vs earn tokens to earn more tokens.