Konstantin

Definitely both together. I feel like either options solely by itself is too limiting.

This is a very interesting question. In our team we take the approach of "sprints", where we work on brainstorming, preparing and actually creating new features. Then between every "sprint" there is a period (that can vary in its duration), when we patch the holes and work on correcting the existing issues. Of course it also involves prioritisation - how urgently does a current issue need to be...