I would love to see an option to display elements from multiple proposals at the same time in an Infraworks 360 model and allow users to control transparency based on proposal option.
That would allow us to highlight elements of one proposal and fade in/out transition elements of another proposal giving real time feedback and visual comparison from one proposal to the next without having to wait for the model to update when switching between active proposals from the list.
This would require a transparency option for proposals and also the ability to show multiple proposal elements at the same time in the active model but would provide a great visual impact to the way designs are displayed.