i like can bus. lots of pros there. Mostly better use of energy due to the communication happening between the ESCs. That’s a benefit of traction control. It won’t waste energy spinning up a wheel more than the one next to it if its not accomplishing anything while riding. So when you carve hard on tight trucks and come up on two wheels the other one doesn’t spin wildly. It also helps when you’re on pavemnt with slimy wet patches. Its subtle but worth it in my opinion.
But yes, if you don’t have solid connections or solid mounting of your components and things disconnect because they come loose you’ll have more problems with can bus then with split ppm. take the plastic off your connector, slip the connector on the pin, one drop of flux, one drop of solder, done.