In all honesty, apart from being able to play with the same clubs as you have in your real golf bag, why do we need any more gear in the pro shop? There's already something to suit every budget and then some.
And we seriously don't need any more balls. They're just a bunch of pixels with different attributes at the end of the day. Nothing more, nothing less. Whether it says Titleist or Donnay on it makes absolutely no difference.