Yeah; sounds like a good process. But all too often the "try to improve performance characteristics" part is entirely skipped. It doesn't take much to run A/B tests and wonder why you are 5X over other similar apps. It was clearly never done, at least not by anybody in a position to help mitigate the issue.

I use a similar version of your processes. adding: when code complete examine the footprint and speed, and diligently explain to myself where the time/memory went. If it was wasted, do something about it immediatley.