I know you haven't asked for feedback on the user experience but I'm going to write some anyways, because I know it can trip up other players.
1. On all the instructions pop ups, have instructions that you can close it with the "S"-key.
2. It's hard to cycle thru pop up notes that have more than one message.
3. Maybe add a view that collects all quests and pop up notes that you have read, like a check list. It's kind of easy to miss stuff as it is now.