[ ] ShiftCompare -> workbench; this is required for alpha, so putting milestone for this issue for alpha so that it gets taken care of.
[ ] Replace with Improved ShiftCompare (which will have a better name ;-), moving that back into the main visualizers. That's a "try for alpha, but definitely by beta", so the milestone can be backed off if need be, once the above is done.
This consists of two parts: