Of course the WWE would push for him to appear in WM30, they need all the star power they could muster to make it great.
http://www.wwe.com/shows/wrestlemania/30/stone-cold-steve-austin-coming-to-wrestlemania-30-26219025The biggest WrestleMania in history just got a whole heck of a lot bigger, now that “Stone Cold” Steve Austin has confirmed he will be there! The WWE Hall of Famer revealed the huge news in an interview with TMZ. When pressed for what his role will be, The Texas Rattlesnake said the WWE Universe will have to tune in to WrestleMania this Sunday on WWE Network to find out.
Goodness, you are a hard guy to please.If they don't have anything intriguing for him to do, he shouldn't even show up. He's been used terribly for the past few year's.