I like the idea of attaching the case. Not only for following up, but also for reading the whole reason why something should be implemented and it shows the developers that there is a real person with a real pain behind it. Furthermore reading the original case sometimes helps in finding more efficient solutions.

> high-level estimate bucket

How does this bucket look like? Something like: `within 6 months`, `3 months`, `this month` or kind of effort oriented like `high effort` (takes long), `medium effort`, `low effort` (quickly implemented)?