Everyone on every team should have something to "own" and feel proud of. You don't "own" anything if you're always on team defense. Following this advice is a sure fire way to have a high churn rate.
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My team had a bunch of stability work, and bug fixes (and there was a lot of bugs and a lot of tech debt, and very little organizational enthusiasm to fix the latter).
Guess where there morale was, compared to some of the other teams?
> At the end of the cycle, we swap.
They swap teams every 2-4 weeks so nobody will always be on team defense.