Drupal Taxonomy in D6 vs D7 I'm building two very big sites using Drupal. Both will have plenty of vocabularies with up to 6-7 levels deep like this:

State->District->City->Area->office name->department

The taxonomy will have multiple parents from across vocabularies.

I'm working on D6 sites and managing taxonomy hierarchy isn't easy and is bit cumbersome with D6.

I want to know if it'd be easier with D7 especially when it comes to managing terms with multiple parents.
Any idea?
The UI for dealing with taxonomy term relationships hasn't changed much in Drupal 7 I think.

However, you might want to look into some contributed projects, for example Taxonomy manager, which exist for both D6 and D7. I don't know if it provides a solution for this, however.