It would be great if it turns out that way. The Viper is a poor comparison because it is a very low volume exotic sports car and people don't buy it as a daily driver, for good reason. However, most of the people who buy a Wrangler will never look under the vehicle and honestly probably don't even care what's underneath as long as it drives well, and it will drive better with IFS. They just want it because it's cool, makes them feel rugged and sporty and can still be a practical daily driver. I know a guy who has a brand new Rubicon. He noticed my scarred up Range Rover and I talked with him a bit about the Rubicon's off road ability and invited him to go off roading sometime. He didn't even know what Rubicon meant and said he would never take it off road because it was too new and cost too much.
People said that IFS/IRS would discredit Land Rover and the Toyota Land Cruiser/Pickup too, and it has for only a very small number of potential old-school buyers who want them for their off road ability and don't want to compromise that. However, Land Rover is doing better than ever and so is Toyota with the pickups and the FJ. This shows that the automakers were correct about giving up on straight axles in terms of marketability to the masses.
Personally I want straight axles and I think they drive well enough on the road too. So, I am willing to live with older trucks. Besides, the Jeep aftermarket is so strong that if/when they switch to IFS/IRS, there will undoubtedly soon be a straight axle swap kit offered for those few hard-core owners.
I think this guy on a JK forum made some good points:
Besides, Jeep has already worked on such a concept: