It didn't bothered me much before but now I'm starting to feel the power armor are just disapointing for their lack of true customization.
For starters, I find the lack of worth in changing their pieces to another (for obvious reasons) is just a shame becasue you could brin all sorts of different combinations if they were not impared by their armor resistance, maybe if they were made as tiers (light, medium, heavy) it could proboly make em more worth while then they are right now.
The lack of aesthetic changes when you mod your power armor also feels like a waste of potential there for personalization, a obivous example is the the tesla coils mod that could change the appearance of your X-1 power armor just like the original Conclave tesla power armor.
Not only that but the paintings you get are so limited as well and making them inacessible or limited to one specific type of armor makes it almost like the devs used that on the sole pourpose to make the other less power power armor relevant later in the game (wich they don't).
Thats just a litte criticism I have for the power armors in fallout 4, I still love the changes the devs made, it was realy needed, but I realy wanted to bring up a bit of what was missed with its rework and hopefully when the mods are officialy avaible we will see some of those points brought into light to enjoy those bad boys even more.