I’m new here and I think using WIFI would be the system that would convert me from DCC. It is internet of things and could be DCC on steroids. However there are a few things that will have to happen before. Please take this as an opinion and suggestions, not a critic.
Connect to existing sound DCC decoders
I have a lot invested in DCC sound decoders, and probably lots of potential customers as well. A complete swapping to a new decoder would not be a good financial move. This is not considering sound decoder manufacturer such as Soundtraxx, ESU and TCS have the correct sounds; chuff, bell and whistles for specific engines and roadname. So imo, a smooth and more probable transition will require to have wifi module capable send dcc signals to existing sound decoders. IMO, sounds are a speciality.
With DCC, you can control your entire layout for turnouts, signalling and more with JMRI on a PC or an app on smartphone or tablet. I think WIFI accessories for switch, lights, signalling, or anything that can be control will be a killer to DCC for the future model railroading.