I think you should try making that a full-height walkway that extends into the deck above. And on that upper deck, sandwich it between two cabins so it's not a traffic impediment.
Yes, if the port and starboard crawlways were allowed to extend up into Deck 6, they could be sandwiched between crew quarters. Rearranging quarters means I would lose a few beds. However, I would have to add a new radial corridor to port and starboard so as to provide access to the quarters that are pinched-off between each crawlway and each forward elevator tube. Adding 2 corridors means I would lose a few more beds.
If the forward crawlway were allowed to extend up into Deck 6, the forward radial corridor that exists on Deck 6 would have to be replaced with 2 new corridors so as to provide access to the quarters that are pinched-off between the crawlway and the forward elevator tube to each side.
Fair enough. Of course it could also intersect a curving corridor on the upper deck, providing additional connectivity.
Quarters caught in the front third of Deck 6 (between the elevtor tubes) can only get out by going down the crawlway to Deck 7.
A radial corridor on each side of the crawlway would have to be added. This means I would lose a few beds.
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Both solutions detract from the tri-radial symmetry that exists on Deck 6 right now.
Either way, there is a loss of too many beds to be able to accommodate 432 crew members. I could add crew quarters in the outer ring on Deck 6, but this would make the remaining cargo space outward of the quarters too narrow and too hard to reach.
The attached drawing shows Deck 6 (top left), Deck 7 (top right), Deck 6 - tinted green - on top of Deck 7 - tinted pink - (lower left) and the main corridors, crawlways, and elevators (bottom right).
https://www.jbot.ca/space/bhc/67 combo.jpg
