Requirements & Defects separated from Test related issues
Team Organization
All QA team works in a separated project from the rest of the team
UI Step
Advantages (Pros)
This separation allows you to manage permissions more effectively - you can have team members that can create requirements and are not allowed to perform test executions.
Does not affect you current projects, as it keeps your existing requirements and defects project as-is, completely separated from testing related tasks
UI Step
Disadvantages (Cons)
Requires manually synchronizing versions from the requirements project to the other ones