It seems to me that everyone on the Second Gen NSX forum loves to take the pessimist's view on the very car they chose to buy.
If Honda has such an issue continuing to support and put some small R&D dollars into this car, then so be it. My viewpoint is coming from the optimist's side, that Honda is a great company with a history of success in performance cars (see current Civic Type R as an example) that has the ability to revitalize the new NSX.
No, they would not need to simplify the engine to reduce costs. I laid out various ways they could reduce costs a few posts back - by removing features on the current NSX that no enthusiasts are really asking for, such as the front motors that are dubious in whether they even improve the car. The retort is "but that will cost R&D dollars" - yeah, so does everything else in the automotive world. If Honda wants to not spend any R&D dollars on their products, they should, in theory, shut down all operations and cease to exist as a car company. That argument is ridiculous.
Edit:
And, if the NSX team is too "techy" to make the car simpler, fire the NSX team and send this project to the people who did the current Civic Type R, which is a simple and effective performance car that is selling by the bucketloads.