Is your feature request related to a problem? Please describe.
Instead of just having the git log graph to the left and the diff to the right, I would also want to see a diff files panel.

Describe the solution you'd like
The left panel could be split into an upper and lower half, where the upper one could show the git log graph, and the lower could show the diff files.

Describe alternatives you've considered
None, actually.

Additional context
Feast your eyes on this high quality prototype.