The Ultimate Project Planning and Management Suite in Drupal

This does not remotely exist yet. Funding a point person to lead the project to make it, and creating or improving all the modules that would make it up, is a job for coordinating community initiatives- itself an initiative that could use support.

• Drag-and-drop arrangement of requirements. Requirements will have complexity/difficulty estimates (user story points), and phases can have totals of these points, so that as the client drags requirements upward and downward, only requirements reaching a certain total of user story points can fit in that phase.
• Ability to tie interdependent requirements together.

Remote collaboration tools

• Real-time chat.
• Multi-person editable wiki.
• Built-in sketch tool.