Currently you can click on the title of the node above the "Some notes below your chosen depth have not been shown" and see the next few posts. This isn't obvious though and it would be better if it was linked as you suggest.

Another thing to consider is possibly having a secondary node depth, so if you click on the "notes below your chosen depth" it'll show the next, say 10 posts instead of whatever your primary node depth is set to.

I know you can click at the note's title. It just isn't quite as convenient - particularly, though that is a rare case, if you need to scroll back to get there from the bottom of a long note.

I really like that secondary node depth idea!

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Makeshifts last the longest.