I'd say there is a future for both.
For personal use I own an XDJ Aero and a DDJ RX.In the club I work for it's CDJ 2000 Nexus's.
I'm never worried when playing with the XDJ Aero or the CDJ 2000 Nexus's, I load a song and it plays, no sweat.
With Rekordbox DJ and the DDJ RX, while I'm having a lot more fun I am constantly worried something will go wrong. I have a beefy laptop and have not yet experienced a crash but every once in a while the sound glitches which sounds terrible. In a club with the volume up high the crowd would wince. This would never happen on a XDJ/CDJ.
I think Pioneer DJ are on the right track and appreciate that they go to the trouble of providing both experiences. Just wish they would hurry up with a 4 ch XDJ RX!