I understand that you don't have to go into those doors, but considering that it's all part of the exploration in the game, that's pretty crap in my opinion.

I don't want to have to go back and find all those safes and doors again. It's not game breaking or anything. You just pick a different partner, or don't use one. I just find it annoying.

It also made me feel that what you can do with your character outside of FPS style combat is starting to feel limited or that it really doesn't matter too much.

There's the item crafting and resource management side of things that has potential, but even it would need polishing in the next game. Specifically the settlement building.