Bob,
I share your concern about the fidelity of the show. As I alluded to above, continued exploration on the wreck depends on entertainment dollars. If the show flops in the ratings, then future Titanic projects will be met with ever-increasing skepticism at the network (re: purse-string) level. As long as Titanic shows remain profitable, money will continue to flow into continued exploration.
In 2005, the History Channel paid Lone Wolf Documentary Group to visit the wreck in order to explore the possibility that Titanic grounded on the iceberg. This was a sensational enough idea that the network saw a probable return on investment (i.e., they could see how the idea could realise a profit), so they funded an expedition to the wreck. The LWDG team didn't find any evidence that would either support or refute the grounding theory, but while looking, they came across the double-bottom pieces. Now, whether or not you agree with their conclusions as broadcast in TFM:MP, you must admit that the raw data that was documented and analysed (Ken Marschall's drawings of the double-bottom pieces will be a vital reference for years to come) has advanced our forensic examination of the wreck and provided fertile ground for new theories regarding the break-up.
TFM:MP proved to be a success in the ratings game, too. Because of that, the network funded a follow-up expedition in 2006, in the hope that more of the same would be uncovered. We had every expectation of using the double-bottom pieces to point the way to more finds in the same category (maybe missing pieces of the shell plating?). Unfortunately, the Russians withdrew the Keldysh from free-lance operations and our expedition was cancelled. This presented a quandry...what to do with the budget already allocated? I can't speak to the financial decisions that were debated and made, but I do know that LWDG pressed ahead with an analysis of the data that had been gathered to date, enlisting a respected naval architecture firm to help model the data. At the same time, the producers went ahead with something we enthusiasts have been pressing for...a concurrent exploration of Titanic's sister ship, Britannic. I've got to tell you...I was never happier when I found out that one production company would be looking into both Titanic and Britannic, which meant that evidence from one wreck would be used to help evaluate evidence from the other. And yes, to address your concern expressed in the TRMA forum, those of us working on the project were very well aware of Olympic's history, as well. For the first time in my knowledge, forensic data and historical evidence from all three ships were being viewed and evaluated together in order to look for common threads.
So at any rate, there is reason to have a successful Titanic show even if the conclusions don't satisfy everyone in the Titanic community. Again, I don't yet know what will be presented in the show, so I can make no predictions on how well Sunday's show will speak to you.
I have a personal reason for hoping that the show presents reasonable evidence and conclusions. My name is attached to this project, so if the analysis doesn't come across as credible, then my own credibility will suffer as a result. And credibility is all that I have...Titanic documentaries will never make me a "star" and I have yet to make a dime off any of my contributions; in fact, I have spent a lot of money that I can't really afford (ask my wife) on reference material so that I can be the best historical advisor that I can be. My compensation is in helping to make the shows as good as they can be and to continue to have access to the forensic material/data that is coming out of these entertainment-funded expeditions. If the shows flop and network funding for future expeditions dries up, then we will have no new information coming from the wreck.
Believe me, Bob, I have much more of a stake in the show's success (both monetarily and scientifically) than you can imagine. And I have to say that the producers with whom I have worked seem to me to be honesty interested in making a positive contribution to the history and analysis of the Titanic disaster. If I didn't respect them -- or feel that they didn't value my input -- then I wouldn't work for them. I mean, it's not like I'm getting paid to work, you know?

You may not agree with all their conclusions, but how is that any different from the debates that continue to rage in the online forums? The point is that new information is coming to light and we are discussing it. Everyone with whom I have worked -- from my fellow advisors to the show's producers -- have no illusions that we will have answered all the questions regarding the disaster. Rather, we have sought to present the best case for your (i.e., the Titanic community) consideration.
You may be either disappointed or pleased with the programme...I don't know. I will say, though, that if you expect the programme to lecture or tell you how you must think about Titanic, then you will be disappointed.
So please, Bob, give those of us who worked on the show a break until you've had a chance to see it first?
Parks