It's difficult to say with Taker because he's such an old school type of guy and his character, to some degree, still has some mystique about it. Taker's character as this supernatural, god of death figure is one that doesn't quite fit with the mold of having an emotional goodbye. When Flair retired in WWE years back, Taker appeared to say goodbye after Raw went off the air, saluted Flair with the kneeling pose, hugged him, etc. but it'd be cool to see Taker break character once as a means of truly putting to rest the Undertaker character.
Still, if Taker wants one, he deserves one and I'm sure he'll get one as it only seems right. Taker is someone who's pretty private and doesn't tend to break character a lot. I mean, he doesn't wear his gear of anything when he's in public. Truth be told, whenever I see pics of him online, he looks about as normal as anyone can possibly get. There are instances of people who ask him politely to pose for a picture or autograph or something, he's said to be really nice about things like that. There are also a few videos and pics out there of Taker working out, Taker himself posted this really cool looking cake that some friends/fans made for him for his 51st birthday last month.
Taker's also a private guy in the sense that he doesn't broadcast a lotta stuff about who he is, what he's about, etc. via social media, he doesn't do very many interviews at all and Bret Hart sort of described him as the quiet, easy going type who always made sure the boys got back to their hotels okay when they were out partying after a show.