Champagne node !, that makes the trade routes more historical and more interesting for burgundy, after all it always bugged me a bit how the Rhone/champagne route was merged with the north sea coast of the low countries.
And the death of wetn is nice, always had mixed feelings about that node (understood the logic, but felt it took away a lot of immersion and allowed gamey tactics vs the AI).
Champagne looks like a big feeder node (which is more or less historical), it feeds into bordeaux and antwerpen it would seem, and is feeded by genoa, not sure about the relation with rhineland (i would say it gets feeded but well honestly it could go both ways).
and the new saxon trade node will hopefully make the hre a bit more interesting, great changes overall !