@phil2 @Joe Riel
The original proposal to add a visual marker to the components in the workspace is unlikely to provide a quick and complete overview for complex models.
I recently found that the initialization diagnostics app basically provides such an overview. Unfortunately, it doesn't always work, and sometimes it lists components that are set to ignore (see Q1 and Q2 in https://www.mapleprimes.com/questions/234537-Initialization-Diagnostics-Questions). Also, it is not possible to quickly check and change ICs in the model workspace (complex models can have many components with similar names, which makes finding components even more difficult).
For these reasons, I think a new item in the Model Tree for filtering components with ICs set would be the best place for a quick and complete overview. A click on a list element would provide direct access to the ICs for checking and/or changing.
I have already submitted a software change request, but cannot provide more background to it. So I do it here.