Except it wouldn't really be going against canon, as the last time we saw either boy they were kids, barely teens. Sure, John Ross seemed a bit bratty back then, but a lot can change in 20 years as they grew up. And Jacobs' idea wasn't switching them "just for the sake of it", as he explained it, it made sense from a character standpoint. You can talk to people who’ve been adopted, many do experience some feelings of not really belonging in their family. Christopher having this nagging insecurity about not being a “real Ewing” could motivate him to want to prove himself by becoming the biggest most successful oilman ever, just like his uncle J.R. and grandpa Jock, no matter what he has to do or whom he has to destroy to do it. And then you have John Ross, growing up in the shadow of his father, whom he saw treat people like dirt, including his mother. And, especially since they ignored the films, he lost Ewing Oil and ended up along in a nursing home, of course he’d want to be nothing like him, and strive to be a good honest businessman, like his uncle Bobby, to repair the damage he feels that his father did to the Ewing name. So you have these two cousins in business together, but Christopher wants to focus on oil while John Ross wants to look to more environmentally friendly alternative energies, each of them thinking they’re doing what’s best for the family legacy, turning against their own fathers while trying to be like each other’s father. Meanwhile each father is looking on in disgust at what his son has become, and blaming their brother. J.R. thinks Bobby is turning John Ross into a wimp like him, Bobby thinks J.R. is turning Christopher into a monster like him. Boom! You’ve got multi-layers of conflict! John Ross vs. Christopher, John Ross vs. J.R., Christopher vs. Bobby, which brings us back to J.R. vs. Bobby. The drama practically writes itself.