I'd like to suggest a more human readable and clarified use of the activity status.

Although I am perfectly happy with the limited codelist, almost always there will be a translation table available that codes the internal used activitystatus  into the IATI code.

Eg :

1 ToR final, contracting

2 Implementing Inception phase

2 Implementing : Main activity started

This would contribute to a better communication from reporting to participating organisations.