I like the idea of the placement of the orders signifying to what degree to each Shard they are acclimated to. I think Honor is partly about forging bonds, which is why Adhesion and Tension are the closest to Honor. Growth would also fit as the closest to Cultivation (not sure how Illumination fits). This may also signify how strict each group of Order-spren are; the closer to Honor, the more strict the oaths.