Mainly because the game was started being written several years ago when said armors were mainly confined to the realms of science fiction, with the real ones being big, bulky, and unresponsive. 
That said power armor could certainly use a small fix to allow people to wear backpacks and such. The main difficulty just comes from the fact that backpacks are treated as a type of clothing. Probably a new flag would need to be added that determined if something would be power armor “compatible”, because else it’s almost impossible to differentiate from a trenchcoat and a backpack (especially with modding flexibility maintained).
Similarly it probably wouldn’t be too hard to add a temporary strength increase to power armor, though care would need to be taken to ensure that said strength increase did not factor into the player’s health (which makes it slightly more complicated to add).[/quote]
(Warning just woke up, probably should try to not post this early and I know I can come across as be a bit of a massive asshole)
Not to be rude, but if that’s the case the game was also being written where the ability to grow gills, and hand held rail guns were also things of fiction. So I have some difficulty buying that one. Though I do understand the difficulty writing science fiction faces, our world changes around us constantly, exponentially so for technology.
However, you have no idea how unstressed and happy the rest of your response made me (that sounds very sarcastic, but it is not). The clothing issue would present a pretty hefting challenge as backpacks and the like* are not only a significant branch of clothing in the game in more ways than one, and altering them to work would require a lot of changes to in game.
The strength-health thing sounds like an issue for more than just implementation of powered armor in the game.
I also wanted to ask your opinion on my initial post for the power armor mounted turret
These questions in particular
A. Is it doable?
B. is it too over powered? (I can see a lot of potential cons, but I could come up with more)
C. Would you be interested in hearing other modifications and their crafting recipes? (I have a lot of ideas for this, most of it draws from already in game resources**)
- I did notice that the tactical dump pouch could be worn on power armor as well as the holster, this is because they don’t actually encumber any of the body parts. Additionally could a solution be achieved with a better developed clothes layering system in the game?
** Prepare yourself for more shameless rip offs from Iron Man and Lost Planet 2 (I understand that game was really disliked please don’t judge me ;~;)