We've already seen the wrestling version of crash TV back in the Attitude Era (mainly 1999), so I'm not interested in seeing it again if that's what you mean by a more adult-oriented product. If you mean just the inclusion of blood and cursing or whatever, those things aren't even completely missing. They're already TV-14 on PPV. The corporate section of their website even says that they're TV-14 in the last hour or Raw. (They were PG on Smackdown back in the day...) PG isn't the problem, just appealing mainly to kids is. Kids will still watch a product that is more geared towards adults, because I and several others did during the AE. Hell, WCW, with their awesome NWO angle (which was more geared towards adults than kids) was technically a PG show.
I'm sure they'll go back to TV-14 eventually one day, though. Maybe within the next 2-3 years.