Nitpick, but it threw me off at first yesterday when going back to testing CSI after quite some time so I wanted to mention it...
When opening the 'Control Surface Settings' dialog, the 'Surfaces' entry doesn't appear immediately although the corresponding 'Pages' entry is selected. At first I thought the 'Surfaces' entry I made previously disappeared so I made a new one several times but bam - disappeared upon reopening the dialog.
Took me a while to realize one has to click the 'Pages' entry again (though it's already selected) to make it appear again.