Just a guess, but since Bluetooth firmware can be updated easily, feature creep will occur and more and more Legacy functions will find their way into the Lionel app over time. In 5-10 years it may be prohibitively expensive or otherwise difficult to manufacture the cab-2 remote or a successor, and in that case one might expect a move toward Bluetooth or something similar for everything in their line. For those who want a physical remote, the universal remote could be similarly upgraded in capabilities.
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