Such a real shame the rear of the cockpit isn't joined up to the door leading outside. Just running up the stairs and into the ships flight deck would be super great.
Why can't this ability be added as a small DLC for all ships. Or even arx. Would that make it a cost effective endeavour?
Flimley
it isn't that easy as it was discussed in other threads about ship legs. There is probably a transition to black necessary as it is when boarding/unboarding an SRV. A fairly seamless looking approach may be to enter the airlock and pass a 'decontamination' procedure like we experience in Mass Effect. When the airlock opens then we are either planetside/on the stairs or inside the ship which has its own environment.
A DLC could also solve the issue for those players who don't see value in ship environments: They experience 'fade to black' whereas DLC owners can opt for the on-foot procedure.
FDev could start with the SRV hangar as the first asset because it already exists when the ship is equipped with it and could add simple gameplay such as 'SRV hot deployment' i.e. ship hovers over the planet and drops the SRV Mass Effect style

Besides that they can sell obvious paintjobs/customizations with ARX and maybe a small hoverbike. I think it is a low investment development which may help to find out how many commanders would be willing to pay for additional rooms in the ship.