Really? I've stayed on DOZENS of DVC exchanges, and they've ALWAYS said "Welcome Home!" That's one of the real perks of staying at a DVC property. It's not just an empty welcome, but the way they treat you.
I agree with you, it's very nice to hear it and even better because they follow it up with consistently good service. But really, for a while there back in the day on the disboards war was waging because word got out that the Cast Members were saying it to DVC owners who booked out of their owned resorts and <GASP!> II exchangers and cash guests.
I keep waiting to see over there a post from a Marriott owner telling them that Marriott has adopted the practice but I'm too afraid to do it myself.
(Realize, I'm talking about the very small minority of disboarders who can be considered militant whackos. The vast majority are as friendly and helpful as any you'll find on TUG, and I'm very appreciative of what those nice folks at the dis have been able to teach me.