I think too one thing that makes Surprise Surprise more difficult now is the internet - many people are able to track down their long lost friends and relativies through things like Facebook - so although I'm sure there are stories out there they're probably not as plentiful as they were in the 1990s.
Right, well for starters I doubt it'll work at 7pm like it used to unless the format is radically changed.. which it probably will have to be anyway. If anything it could end up being another Cowell type vehicle with "Surprise Surprise" just as its working title.
Probably be on at 5.30pm on a Sunday afternoon, Fern Britton would be a better choice of host (as Brekkie suggested).
It'll be littered throughout with viewer "chance of a lifetime" phone-in competitions and the theme tune won't be an iconic one in any way - at the most an uptempo instrumental hint to the original "between the eyes" one.
On this subject, has anyone ever managed to get a full version of Cilla's 2nd theme?