Looking further into the new ones i can report a couple of things.

I understand what the target is by changing the actual grid size in the new storages to integrate adjacency limits into the structure itself so huge rows can't be built at least horizontally, however this has a knock-on effect when doing anything else at all with holds, for example, dropping a 1x1 in a tiny nook for dedicated utility function (in this case handy steel for rebuilding pods) would not be possible like shown here with the old bulk variant. (capacity went back to default post update, ignore amount)
https://steamcommunity.com/sharedfiles/filedetails/?id=3552920285

It also prevents using that sort of compact storage for other non gravship purposes like this neat little workshop i was able to build thanks to your mod, shown here with the now bulk variants.
https://steamcommunity.com/sharedfiles/filedetails/?id=3552920424

It is not a dealbreaker when using the mod since you had the foresight to make them distinct and separate, the old and the new, but it hampers some function when not wanting to manually tweak the file for lower capacities when using the new ones, rather than using the little slider bar on every individual hold and building the old variant instead

Additionally, i noticed something with the massive cargo hold, it is very commendable to refine your craft and polish your work, genuinely, but in the effort to balance the holds and reign them in it seems things have swung too much in the opposite direction, as a capacity of 75 is actually the same tile by tile as just building regular shelving, 25 cells x 3, with regular shelving being cheaper to make and movable and not requiring substructure, it defeats some of the purpose of using that massive hold in the first place.

I think maintaining the efficiency of 9 stacks per tile throughout with the 1x1 as a base would be perfect, maybe 8 per tile when getting to the massive.
https://steamcommunity.com/sharedfiles/filedetails/?id=3552921888

Ultimately you are the author and you've done way more than enough as is, these neat new additions like the 3x3 are fantastic to see and it has already done a ton to improve my Odyssey experience as well as that of tens of thousands of others, but if you are so inclined i would recommend changing the adjacency to be either the way it was in the past or leaving it entirely self-enforced to the individual user, as well as bumping up the capacity of the new massive hold, even the 3x3 with its lowered five stacks per tile is still an upgrade over regular shelving.

Pathcost being lower could also be nice with the theme of floor hatches as that new massive hold even when entirely empty slows down a sanguophage with two archotech legs, and a bionic heart, and luciferium to a complete crawl, as if climbing over several chunks in a row, probably even slower.

Lastly, i had forgot to mention previously that i featured cargo hold applications in a guide i wrote about gravships, here is the link if you wish to have a look.
https://steamcommunity.com/sharedfiles/filedetails/?id=3530701999

Thanks once more for your mod and all of your work, cheers.