i only got swiftcast for t5 since people were shocked when i didnt have it, still dont think it is vital. However yes it does give an edge. As for eye, you dont need it either \, like swift it will help, i am only getting it now, even though i completed the game already. My advise is if your with a static to talk to them about that, and what is their position on it, however they will probably want you to get it. Also depending on your skill level, and the people you play with cause the game isnt hard, and you certainly can go without it.