Kinda-sorta-not spoilers for RAW:
Apparently Bearer's kids are at RAW today. They could be approving things for a storyline, or even have one of them be the successor of Bearer. Who knows. I have a feeling it's a little more than just them being there to be honored.
Overall, though, I keep saying that I don't want to see something like this, but I'd be lying if I said it wouldn't be a great way to get heat. But don't do it in a "Eddie's in HELL" way. They should really do it as general nods to the Paul Bearer character. Have the urn represent Paul, have Punk reference Paul directly, maybe even have Heyman come out dressed like Bearer. They can do this semi-tastefully to get heat, because Paul Bearer was a character and didn't really represent who he was (vs. Orton saying Eddie's in hell, for example).
Honestly, one thing I've wanted to see and I hope to see it happen during this build, is Punk coming out like the American Badass, on the bike and all, and have Heyman dressed as Bearer in a side cart. It'd be fucking hilarious and something I could totally see Punk doing.