Nice work on the cockpits there Vic.
And well said Andy.
I've just been musing on a similar dilemma - what to add, and what not to add, to a 1/48th scale Lancaster.
As some things would be visible by their omission, they need to be added to make the model look 'right'. But the detail areas on some of these items will, at best, be difficult to see and, in some cases, impossible to see.
An example is the W/Op's position and the main spar - if it's left out, the 'emptiness' will be discernible through the main canopy, but if it's included, then major modifications will be required to the kit parts, particularly the way the wings are fitted, the latter involving the fabrication of wing spars, and the inclusion of an internal, 'scale' main spar and frames, with fuselage frames and stringers virtually throughout.
It looks like I'll have to tackle this, which will lead to the addition of further internal detail, which again, would be noticeable by their omission.
But, in areas which will definitely not be seen, such as the wheel bays (the model will be fixed to a diorama base), I don't think it's worth the time, effort and, in my case, discomfort, in adding loads of fine detail which will be hidden until the end of time !
On the other hand, I'd quite like to add some working, internal lighting, in order to, literally, illuminate these detailed interior areas, but that would then result in even more work, adding even more detail, and then having to route the wiring via a wheel bay, through a scale 'Trolley Ac' (with the the wiring hidden beneath the trolley), to run through a hole in the display base, under the base hidden from view, to an external power source!
It's one of the foibles of modelling I guess - where to start, what to add and, more importantly, when to stop (adding detail) !
Like Andy, I think I'd rather get a number of more than acceptable, virtually OOB models completed (i.e, with minimal additional detail, such as seat harnesses), than spend a year or more on just one model.