On the subject of NPC interactions, It is very annoying that it is very difficult to find the right words.

I would like to see key words highlighted in the texts. This way clues could be left to direct the player to the right words. (I was going to give an example, but then realised that I would be posting a spoiler)

My biggest frustration is knowing exactly what is required, but not knowing which words to type to overcome the user interface. It certainly reduces my enjoyment of the game.