@PhilB. That sounds pretty easy to use.

Thanks! It would still allow to embed a wifi controller as well, so you can use it in 2 different modes: a basic mode with the preprogrammed tags, and an advanced mode with only custom tags, where an app can be used to control the train and program in more complex behaviors.

Basically 2 versions of the same controller, and you can swap out components to turn it from basic into advanced.