I'll just start with an example. We have a repeating task "Release library" which in the beggining we agreed on an estimate of 2 points: it seemed to be twice as hard as our 1 point baseline. As we have this task more and more often in our sprints, it got easier for us to do it, all the steps are known so now we tend to estimate the exact same task as a 1 point task.
Is this ok from scrum perspective? From my understanding, complexity-wise the task says the same thing and it should remain 2 points forever, just that now it's more simple for everybody, similiar to a 1 point task (which makes sense).
What should be done in similar cases? I see only 2 solutions which both feel wrong:
Estimate points remain the same, even though the task seems less complex than it used to be.
- Decrease estimate points, but then you might see a decrease in team velocity. (of course if this happens more often).
Please consider the example just an example, imagine something similar to any other stories.