As teams begin to tighten their feedback loops, handovers between tester, developer, Product Owner, and UXer will start to blur. Using the metaphor of rugby, as Nonaka and Takeuchi did in their paper The New New Product Development Game, the ball will begin to be passed very rapidly between team members and the distinction between who is testing, who is building, and who is designing will be very hard to make.
Also, as the teams start to get much better at breaking down their work into small, similarly sized discrete chunks of value, certain aspects of their work such as estimating will begin to become less necessary.
Finally, because the team members are working so closely, aspects of their work, ...
