It's miles away from a silly gimmick like motion sensor gaming trying to take over traditional gaming.

Playing a game wihout having actually to own it ,at your own home and with your friends online truly is revolutionary, if not realistic.  Sony's deliverance is not  relevant (given their record and all) ,it's  the possibilites it opens up  for  console gaming in general what's incredible, particularly when it's  free.

 Streaming  was a exclusive to  PCs  , now it's on consoles. It's  the next step on online play (which was also revolutionary) 

Why?

It essentially makes every MP offline game playable online, it means you're able to demo any game (for an unlimited time, really). Heck, you could complete whole games with this feature without owning the game.

I can't wait to try this with FIFA 15 because I don't own it yet!

Great Feature? Yep! Best Feature Ever? Arguable cause I say Steam's Family Sharing is way better cause there is no time limit, you can share up to 10 friends and the only restriction is they can't play the game at the sametime (unless they go offline that is). Oh and did I mention that steam is free?

You can play together... and that "limit" is more a check, you can continue forever.

Share Play is quite useful, in my opinion. You can have your friend who's on the fence of buying a certain game use Share Play to try the game out. It's also very useful for games with local multiplayer since the other person doesn't need to own the game to play with you.

That said, I wouldn't say that Share Play is the best feature ever, but it does come in my personal Top 5.

Well, considering you have to start a "new session" every single time... I would say its more than a check... Plus, it apperently doesn't save the progress for both players, it only saves it for one? Vs steams is like, you can play for as long as you want and also in offline and it does save it for all players

Ok ^ I don't want this topic to get derailed

It is a very cool feature, especially that you can play local co-op games together. Would be even better if you can play with more people, in FIFA or something.

What WOULD be the best feature ever?

As Jizz mentioned earlier, Family Share on Steam. It's so f***in good!! :3

But even if Share Play is not the best feature ever, it is still way up there on the list.

It should be. If it actually works as intended. And doesn't have bad lag. If that doesn't work. Than the feature is gonna be ignored.