I don't understand why this was downvoted, I'll balance it out because it's a relevant question for this forum. I honestly wouldn't worry about this until you feel everything is ready in your game and it's completed. This is polishing your game, and I'm not against the idea but it will save you a lot of time if you write this down and come back to it later when the game is further in development and you can judge it based on what it looks like around all your finished art and design.
Edited by Funkey, 15 March 2016 - 01:29 AM.
I'm up for a chat if you want to bounce any ideas about anything game related. Feel free to add me.
Big Smoke: Same things make us laugh, make us cry.