Probably a bit of a fancy feature but I would have found it handy a couple of times. An option to record the differences found in the same log file over all sessions. A lot more rudimentary but somehow similar to project histories found in Sourcesafe.
In fact you can write continues log right now, just remove size limit, if I'm not mistaken. Interesting feature would be a tool to parse such log and present it in more visual way.
Right, had forgotten about it. The log file already has the information I want and some TextPad macros will easily help me to better read it. Thanks for the tip
This log is a bit different - it just keeps information about what was copied. What you are describing will be added to version 3 as SmartSync mode, when index of folders will be stored to see if file was deleted or added.