I think that good old fashioned detective work has solved a lot of cases, and yet there are still a lot of cases that could have been solved faster, and yet more that are still unsolved.
I don't know exactly what MIS have to offer or what value it might have for the investigation. It sounds very useful for intelligence and military use, but I don't know how much it can contribute to a missing person's inquiry in these circumstances. But the police investigation and the sulsar searches will surely continue, and as I said before it'll be another tool in the toolkit. I am sure that Corrie's family want it to help, otherwise they wouldn't have chosen it, and I hope it will help.
I'm not sure what a PI could do in these circumstances in the UK. I've got my head full of lots of stuff like behavioural analysis and all the specialties that they used in the Jon-Benet Ramsey documentary....I'd like to see a team like that on the case, encompassing various specialities that can take the limited information available so far and work with it to produce scenarios and then work those scenarios through to end points that the police/Sulsar/a PI could then work on. But we're all different...we're all informed and affected by different things, and I guess Nicola feels that this MIS stuff could be the right thing to complement the police work rather than replace it.
Have you read up on MIS website and the services they provide? I'm sure these are just examples and they no doubt have many more capabilities at their disposal. I expect that TW will have discussed the matter and a plan will have been made for the best way forward. It will be very interesting to see how things work out but IMO they are using technology and experts to progress matters in the best possible way.