Let's say I have a collection named Collection original and inside of it two cubes and two spheres.
Then in a separate collection I have a monkey and another object with geometry nodes. Within the geometry nodes, I'm instancing the Collection original with all of it's objects as separate. I can then view those instanced objects within the spreadsheet which includes their id, object name and basic transforms.
Next I want to replace every instance of the cube object (Cube and Cube.001) with an instance of a monkey object.
I was thinking that the workflow could include selecting the instances via their name (the new string system) or id (objects are alphabeticaly sorted) and then replacing the selected instances.
I don't even know if this is possible in the current implementation of Geometry nodes. I was thinking that it might be useful in reusing the same modular object layout that people make themselves and quickly replacing one modular piece with another that is compatible.