I think Ian's treatise is interesting, and it is pushing management for boldness rather than timidness.
Whatever the specifics he does provide, it must bring all the stakeholders to the table and question, what does the company want the Viper to be? What do customers think defines the Viper? How can they make a car that will satisfy the faithful, gain new customers and be profitable?
Part of the facts are that Chrysler has traditionally not had a lot of money for R&D, it always seems like a boom-bust cycle for them, and the Viper always gets the short shrift when pulling out budgets for development.
However, the shoe string budgets are no longer effective, because the competitors are no longer pushovers. The Viper has tended to be able to pull out trump cards by doing things that are so outrageous that competitors could not or would go there. That's the basis of the original big V-10, that's why the last ACR came out with crazy aero bits, but competitors are not dumb and have always put in the work to move things forward...catching up and surpassing Vipers in power and performance.
So, what defines the Viper? I know there's been radical proposals for V8 Vipers, Mid engined Vipers, Vipers as the highest technology vanguards for the rest of SRT and Chrysler. These ideas all came from [SRT] Engineers, not from web forum wannabes. Management turned them all down, to do the [most] conservative/cheapest thing possible. In some ways that is dismaying for the Engineers, because they all know that their competitors are NOT doing the same old thing for their next car.
Everyone else is swinging for the fences. In some ways, their own legacies can tie them down, and SRT Engineers want to use those legacies as a weakness. Is the Viper also tied down by certain legacies? Maybe. Front engine, V-10, wedgeheads, RWD, manual transmissions, pushrods, 8+ L... are those all inviolate Viper conditions, just like a 911 is weighed down by the rear-engined flat six?
When the 911 went from air cooling to water cooling, was that the end of the 'real' 911? There were lots of old school Porsche owners who thought that it was, and I think the Viper faithful need to figure out what defines the Viper for them, simply because it is getting harder to be at the top of the performance game using the same formula as before, and changes need to come.
I may not agree with all of or any of Ian's ideas, but I love the idea that he is putting out an open letter to figure out what the next steps for the Viper are, because it seems to be that the same old formula is definitely the weakest choice for survival.