Mmm, good points from a designer point of view.
But users in a majority group will most likely want that level of detail at a balance of not sacrificing FPS.
So as long as the GFX engine and code can spread the load evenly and not burn FPS, more is welcomed I believe.
It depends on the SOURCE-CODE and how it processes the GFX engine…because every user will complain about how their system handles FPS and every system varies on FPS depending on spec design.
So you cant design to each spec system out there but pushing the source-code to its best optimal performance leaving headroom for other processes.
I truly understand, however and its another “THOUGHTS?” thread by the way, I would always suggest more detail, because as users we can always upgrade our spec design.
To compare, this is what plagued the the older sims.
Example…
Especially as you zoom in @2.35 and also viewing your MFD on your A-G Radar/ TGP/ TFR/ FLIR / MAP Detail etc so to speak.
Also immersion is vital when take-off / landing /flying low / terrain masking / NOE on a low profile POPUP Attack Mission in a combat sim either day or night and when you do look down from various altitudes you want to see life meaning 3D objects that combine as realistic as you would be in the air in real life.
Low flying example…
You can see the debris and grassy / bushy patches clearly as you’re flying by at speed, if you circle around an area of course you are going to see more detail, right!
Also when using Binoculars…
Or night- vision goggles to spot enemy ground fire for CAS missions so on.
Not forgetting to mention Air Shows and ground scenery and simply walking up to the plane as you look around perform your pre-flight checks, startup and taxing around the place even as you take-off you are enjoying the detailed scenery that makes you feel you are there and belong in that environment, not feeling like its void of life.
Especially at those country aerodromes where its not clean and organized its usually old hangers lots of stuff around about the place so on… heaps of FSX / P3D examples of those type of areas that look very detailed as you perform pre-flight and taxiout.
You being the designer is the vital part of the experience that we the users enjoy when it comes to realism and good graphical design of environments and eco systems that somewhat represent the real.
However just adding extra bits of detail is an art form to master for example instead of pallets, I would have added a fuel pump or a tractor to give that better look of 3D objects from the ground and the air.
FSX Example…
Also use real photos and add them in the shared development progress as you post them in Forums or Facebook Social media to show talent… and yeah ask the users what they want or would like to see.
As to…
Why add unnecessary bytes to the files?
That is a given that byte and files size will increase even just having other MAPS / Aircraft so on you gota allow as users / gamers that on your Hard-Drive anyway. People will say again more poly’s as long as the engine-code can handle and not detract FPS.
But for me its “YES”, I want detail that brings about “LIFE” and “IMMERSION” that can be visually enjoyed on the ground and at visual low altitude.
Especially if its a mil-sim where changing camera views to say a tank or ground infantry where the ground detail is a must! Vietnam Theater 
Will post more examples and discussion points as others join the conversation!
