An inspiring bit of work middenface. Enough to lure me out of lurking and reconsider my self imposed leave. I actually liked your first take better for several reasons despite some oddities (that were since cleared up). It had me doodling in spare moments this weekend. Copying being in this case sincere flattery I hope you won’t mind my posting my take being mostly cut-n-paste on yours, not having time to draw it from scratch.
First a couple errata notes for yours and the original that I didn't see mentioned. The MGT version lists 3 turrets and 13 escape pods, neither set of plans shows them all though, omitting one of each. I’ve added an escape pod in mine (and rearranged them more logically imo*) and although I tried a few ways I couldn’t find a good place for the third turret. I ended up deciding it was instead a hard point mounted grapple for the external launch (no idea if 1ton is the rule or not, and frankly I won’t lose sleep over it

). That’s it at the rear on the upper deck. I really wanted to put a stern chaser turret there for sand. That could still work if desired.
* How am I supposed to get to the outer pods (in the pax common) with other pods in the way? Wait for them to launch and breath vacuum for a minute? :lol:
I’ve also changed the low berths (preferring the horizontal 3 tier layout) and widened the regular beds. I’ve eliminated the lift and upper external hatch in the boarding area as unnecessary imo. I figure the passengers are transported via the launch allowing the ship to land at the warehouses for cargo handling. And I filled in the turrets to the hull and shortened the barrels as they seemed a bit long. Then I pulled the control couch inboard and filled the rest with the actual weapon, and moved the floor access hatches doing away with the dorsal hatches. I also added another seat to the bridge, 5 is just an old standard for me for basic bridges. I moved the avionics to above (not shown) the sunken bridge, allowing the nose to come to the front and slope back appreciably.
Oh yes, I’ve added the launch to the pic, outfitted for a full complement of pax and crew hauling (a lifeboat? with all those life pods… hence transport), with 3tons left over for other uses. The helm includes an airlock and fresher as standard. The 20 seats behind that are divided into 8 first class for high pax and 12 second class for low pax and crew.
I liked the way your first take had the empty space on the upper deck at the rear, for a launch bay being my original take, but it was awkward, wasteful, and I kept adding more to the deck so the launch went back where it should be imo, external at the aft end. I expanded the common spaces a little as well, I think there's tonnage to do it depending on how one counts. I added some room for small galleys and storage to the commons, as well as showing the seating, and moved the secure cargo area as a 5ton mail hold to the back here. The gray at the back is fuel, allowing feed between the wing tanks along with the not shown belly tank.
Down on the lower deck I deleted the landing strut wing access. The landing gear imo is under the main hull, with several trucks front to back. I changed the split of the cargo deck a bit, and added canards for more atmo control and fins and elevators to the wings because they look good. I changed the engineering spaces to my own standards (half actual machinery, half access and support for same) with just one engineering console (since it’s just one engineer needed). The other side is the spare parts and tool locker. Note that each serves as an airlock with external ventral hatch access for EVA repairs. I also expanded the fuel scoops. The engineer is going to put a lot of miles on walking all the way to the back to get to the ladders down, and then up and over and down again to get to the other side. Of course most of the time he can man his station on the bridge and save all that exercise.
Note the lower height of the forward cargo bay (4.5m) necessitated by the sunken bridge above, and the “A”s in a few places are airlock spaces. I figure the forward bay will be mostly small cargoes, baggage and special cargo. Also note the guard railings around the engineering access ladder and hatch to keep cargo from encroaching. I figure there’s a platform the same size, also with railings, half way up/down (3m off the deck) too. The aft cargo hatch is a ramp door imo for roll-on/roll-off. The cargo hatches internal are roll up versions retracting along the ceiling. The aft cargo bay is sized to permit installing suspended fuel tanks in the upper level to allow 2 jump 1 at the loss of 40tons of cargo capacity.
Anyway, I think I’m done playing with this one how I’d lay it out. Nothing saying there aren’t variants of course. And I like the addition of the (Sketch-Up I presume) 3D take of yours. Oh, and my Steward knows better than to leave trash like counterfeit butts lying about but if you see any other nit-pick worthy goofs on my ship be sure to mention them

The ex-Marine with the attitude and SMG will sort out all customer complaints as they arise. Well he is my Steward... I have very few customer complaints come to my attention :twisted:
...heh, a bit verbose, the picture being worth a thousand words would only have saved me 50, er, 32, um... 29! ...ish.