Your comments

Who would volunteer to co-operate with us on a long-term base to maintain the language of their choice (except of German and English)?

It should be possible to copy the second file and then invoke SmartSynchronize on the first file. In the occurring welcome dialog the copied file should be preselected in the second file input field.

Please add your wish as a different request. Thanks in advance.

Right-clicking a commit and selecting Edit Author is not sufficient to you?

What exactly do you want to see: a time stamp for each line or for each executed command? Time stamp or duration?

Well, for us, the toolbar belongs to the tabs.