One of our biggest complaints from long term customers of Meridian that are moving from the PUC to the PWC client is that the Expand All option is missing from the PWC. It seems to be a feature that was overlooked in the development of the PWC interface and seems to be a very frequently used feature amongst a lot of our users.
There is a tool for this now. Working .. users are happy now..
Planned for 2021 R2 release.