Spaceborne structures (ships and space stations) in BT/MW are not as big as some tend to think, either.
The idea of using a space station as a map was previously discussed
here.
Space Stations in BT/MW aren't all that big; most are either generally-cylindrical and on the order of 400-600 meters long, or spherical and on the order of 400-600 meters in diameter.
By way of comparison, a
Nimitz-class aircraft carrier is on the order of ~333 meters long and the
Burj Khalifa (currently the tallest building in the world) is on the order of ~830 meters tall.
Additionally, the stations generally aren't built to accommodate 'Mechs at all, much less doing so outside of specialized bays for them and/or AeroSpace Fighters; as such, it would be even more difficult for any 'Mech to move outside of a few small areas.
An
Overlord-class DropShip is 99 meters wide and 131.2 meters tall.
A
Union-class DropShip is 81.5 meters wide and 78 meters tall.
The internal spacing of the latter is pictured below:
One of the most common classes of space station, the
Bastion-class, is a sphere that is 345 meters in diameter.
The larger
Crucible Station (a Capellan prison station) is a cylinder that is 400 meters in length and 450 meters in diameter.
The
Olympus-class Jumpship Recharge Station is 660 meters long by 1500 meters wide (which must include the solar sail).
The
Snowden-class Mining Station is 650 meters long and 300 meters wide.
The
Invader-class JumpShip, one of the most common and iconic of its ilk, is 505 meters long and has a sail diameter of 1024 meters.
Part of the problem with the opening post is that the thread-starter is imagining that BT space stations are built using Gundam-style engineering specifications (which, in turn, are based on the "Island Three"/"
O'Neill Cylinder" design proposed in reality by Gerard K. O'Neill, a physicist and professor at Princeton University).
The Gundam-style space stations (based on O'Neill's designs), built as orbital habitats, are 5 miles (8.047 kilometers) in diameter and 20 miles (32.187 kilometers) long.
O'Neill Cylinder, exterior view:
O'Neill Cylinder, interior view:
BT/MW space stations are minuscule by comparison.
Bastion-class System Defense Station (0.345 kilometers in diameter):
Snowden-class Mining Station (0.650 kilometers long, 0.300 lokimeters wide):
Capellan Orbital Prison "
Crucible Station" (0.400 kilometers long, 0.450 kilometers wide):
For comparison, the
Nimitz-class aircraft carriers fielded by the US Navy are 0.332 kilometers long.
An IS-built Large Laser has an effective range of 450 meters (0.450 kilometers);
a medium-range weapon could fire the entire length/diameter of most BT/MW space stations.
Canon BT/MW space stations
simply are not big enough to make effective maps for MWO, nor are they built with corridors that could accommodate 40-50 foot tall humanoids (e.g. BattleMechs), so using 'Mechs for any sort of "recover the data cube" type scenario makes no sense from an in-universe perspective.
Also: outside of a very few specific examples (like the
RH7S "Space Hound", the
Shadow Hawk IIC-7, and the
LAMs), 'Mechs are built for land-based combat and do not perform very well - if at all - outside of that environment.
Given that, I think it would be generally better - and probably easier on the Devs, from a workload perspective - to use a hollowed-out asteroid or low-gravity world (which, from Sarna, seems to have a lower-limit of ~0.6
g for the known inhabited worlds) rather than an actual ship or space station.