Having worked on a few greenfield projects in the last couple of years I always found myself eager (and sometimes under pressure) to get a good grasp of the domain and start delivering business value from day one.
While this is an ideal scenario, in reality a good part of the first sprint is usually spent setting up the working environment and drafting a high level architecture. And although this how it should be (you don’t want to start coding without some planning), once an architectural and technological path for the project is agreed, I sometimes felt it would be helpful to be able to fast forward through the repetitive parts of this process, especially if it’s something already familiar and proved to be working.