Like any new gen, unless someone has to have the latest gear, the launch games (more like launch year) are basically up-ports anyway. There's only a handful of dedicated next gen games and there's no guarantee any of them will be great anyway.
Look at 2013. Knack, KZ SF, Resogun, Ryse, KI and Forza 5. Not exactly a ball busting awesome line up.
Just wait it out.
The good thing about these recent systems is studios can be generous on enhancement and upgrade patches, so when someone gets a new system later, you'll probably get a free next gen upgrade patch. So assuming you value playing the game again, you can do it a year later with upgrade patches.