I am heavily involved in developing those, and then routinely let opus run overnight and have either flawless or nearly flawless product in the morning.
https://www.claudecodecamp.com/p/how-prompt-caching-actually...
What I'm doing mostly these days is maintaining a goal.md (project direction) and spec.md (coding and process standards, global across projects). And new macro tasks development, I've one under work that is meant to automatically build png mockup and self review.
At home I use roo code, at work kiro. Tbh as long as it has task delegation I'm happy with it.