It would be nice to see the differences in takeoff between each version of plans so you can inform a client of what the design changes did to impact the costs.
Example - Column side by side comparison:
Total linear feet of interior walls per schematic design - X
Total linear feet of interior walls per schematic design - Y Delta - Went up X LF
This would enable projects where there are multiple revisions or scenerios being considered to quickly show which path is best to take or quickly flag scope creep on the project before the design is finalized.