The point of having sprints is to trade off some utilisation for predictable delivery. I.e. everything should be easily deliverable within a given sprint, to t

The point of having sprints is to trade off some utilisation for predictable delivery. I.e. everything should be easily deliverable within a given sprint, to the point that almost everyone is idle (or working on non-sprint activities) by the end of it. In practice successful scrum teams might get 90% of their tasks done a sprint - if that's not happening you need to commit to less each sprint (fewer points or fewer estimated days) until it does.