I agree. Because of that, I've made it clear to my team that the immediate responsibility for out-of-the-blue requests is triage, not solutioning. There are plenty of tasks for which 15 minutes fixes the problem. There are also requests coming in that represent days of work and need to be prioritized against existing commitments. What I need is for the team to do enough to know which is which, and make me aware of the latter so that I can get that prioritization discussion moving.