Add First Person Player

You obviously design first person view differently from 3rd person. 1st person player would probably be easier I would think because you are basically designing in area. You'd design with detail for a 1st person view. 3rd person view would also make it easy for the character to play but either ways they both can be same or different. Honestly, you get a broad idea of what you have to accomplish during the game as well as move around the scene.