In Changesets view, also show files in change set
In the Changesets view, have a split view, that shows the filenames of the files in that change set.
The view could be just like you use in the Pending Changes view, where the split is resizable, with the top half showing change sets, and the bottom showing the files in the changeset currently selected. That way you can quickly arrow up/down through the change sets and see the files instantly in that set.
If you want to get to the diffing tool, you still need to double click the changeset. This is only about showing the files in the changeset.
This is what TortoiseSVN does in the Log window, and Plastic SCM absolutely needs this as well. Otherwise, it is too inefficient to quickly see which files were modified by a commit when glancing through multiple different commits.
Francois Bertrand commented
YES! This has been an ongoing friction point for us as well. It would be most welcome!