I'm not much of a forum poster but from the outside looking in, the people in favor of the status quo seem willfully obtuse for the most part. Quite infuriating to read actually.
I have a specific scenario in mind to offer you:
What if, in my ship's loadout, instead of equipping an 8 class 256T cargo bay, I simply... remove my optional and leave an empty module there?
I could, for example, put an 8 class shield there. Or a 7-class fighter bay, or a whole host of other huge implements there that don't fit within a standard 1T "rack", because I just removed the racks.
Imagine now that I would like to engineer a 2-class shield module. I can't "equip" it on my huge ship, because its mass far exceeds the capabilities of the shield. That's fine, I perfectly understand why it wouldn't work. But why can't it just be there, deactivated, but there.
In fact, as many explorers know, it's quite possible to strip down your ship enough to accommodate lower and lower class modules (both core and optionals). The constraint is either mass, or distributor draw, or raw power, but never space.
To add another layer of absurdity, when equipping empty cargo racks, the other modules behave as though those racks were full (so as to allow your ship to operate with a full cargo hold, makes sense), but it will sometimes disqualify you from equipping lower class thrusters, or shields. Shields that I could equip 5 minutes ago when I didn't have cargo racks on my ship. Now that I added cargo racks, I need bigger shields.
You can't tell me the problem, in this specific instance, is space. The problem is that my overall mass could potentially tip over the edge of what my shield can support to remain functional. Except I might not care to have a functional shield in the first place. I might just be trying to transport it from A to B.
The list goes on and on. I can put any kind of optional in any slot I want, but I can't equip 2 shields (for balancing reasons I assume, since having 2 shields, even if only one remains active, could lead to some module activation shenanigans). Couldn't I simply choose an "active" shield and treat the other one like dead weight for the duration of a flight? Are you telling me that a 1D shield couldn't fit in an empty 8 class optional slot?
All the arguments I've been reading from the status quo side seem like they were cooked up after the fact to dismiss a lack of features rather than an intuitive, logical explanation that would make sense in-game.