Have you taken into account how cargo or components will enter and exit ships physically? In real life you'd never load with an angled ramp.
TL;DRThey have metrics for a maximum ramp angle they avoid exceeding, but the bigger concern is access size, meaning whether cargo boxes of various predefined sizes can actually get in and out of a ship.
Yeah, we do have metrics for ideal ramp angles. It is shallow, it always causes problems, but we do have a maximum one that we don't tend to ever go past. Ideally, yeah, in the real world, professional haulers load off docks, so it's just roll on, roll off. But it's less thinking about the ramps and more thinking about the access sizes. So if this is a cargo ship, can it actually take 1 SCU cargo boxes in and out of that space? If I stack it four high, can I get them out somehow? If this is a ship that's not going to use 1 SCU ones, it's going to use the big ones, is there actually space in there to do that?
What are the big ones?
They go up in quantities. The biggest one is a 32 or 64 SCU crate, which is what you would see strapped to the side of a Hull C. You wouldn't have 4,000-and-however-many individual 1 SCU boxes on a Hull C. That's just not efficient. So the boxes themselves don't have a bespoke name. They just come in some predefined volumes.