It'd be interesting to see an RDBMS that actually dynamically measures the performance characteristics of the drive it's running on (by occasionally running small "fio"-like benchmarks, or by inferring them from scan execution times).
Embarking right now on a long-term embedded storage project and wondering what people actually monitor (apart from SMART and latency/throughput at app or db-level).
Otherwise, yes, of course,using it as calibration after any HW change would be interesting.