Well, as a supporter of the Number One Team vs ROW XI concept, I would have to concede that this series has been a fairly dismal failure, because (but not only for that reason) for the most part, the ROW XI players just haven't come to the party, and they've been comprehensively outplayed.
Empirically, I believe it can produce an exciting contest that people would love to see, and I think that the past examples show this. But the off-season scheduling (which it's likely won't change), perhaps some not-so-intelligent selection, and the possible rustiness of some of the ROW XI who haven't played an awful lot in recent times have conspired to make it unlikely (IMO) that the concept will become entrenched as a regular event, as the ICC envisioned.
I guess time will tell.