Using Dynamo Player and the Data-Shapes package, we can effectively create a ‘Super find and replace’ tool for parameters in Revit.
In the examples below, we are able to first select the category we are interested in, and then select the parameter in particular we want to find and replace within.
The drop-down boxes in the input form are populated by all categories and then all parameters of those categories. In my script I am filtering out parameters which are either analytical or read only to reduce the drop-down list length.
Changing the Comment for all elements of a particular Category (Structural Framing):