If I may say a few piece... the mechanics of the game overall are user friendly, and i feel like you are worrying about some glassy things with mixed feelings. There are special things to obtain, be it a t-shirt, an achievement or something else, but it is unrealistic to think you will get it all. I would encourage you to try to your hearts content to be the best you can be, and your friends will be there to pick you up when you fall. What you want to focus on is playing the game, see what it will give you and what you cannot have, but keep in mind that things have changed in the past and I would wager will change in the future, so focus on what is important to you. One thing I would recommend from the Mog-station is a Heavensturn head piece or something from the Mochi Daikan. roll with the punches