On the gameplay stuff I think a lot of it is inexperience with the system, there is amazing gear in the game especially in act 2. I have won many fights using g concentration spells, you just need to position carefully and be creative. Ex misty step is a bonus action, you can cast a concentration spell then literally teleport out of danger. Or use an invisibility potion.
I do agree on most of the story complaints, especially about companions with high libedo and no sex standards, this is just poor writing.