I would go for:
- Piece and quite
in the end that's the thing for me. I have tried a lot of tools in the organisational type of range, which are cool but most of it can be substituted with pen, some paper and a watch.
From a architectural perspective
- more metrics
- good logging
- good monitoring
The help to make decisions, even if you only can see correlations in the beginning it helps.
I won't go into tooling or project planning paradigms because they to me are classified as
Those are mainly basics.