While I too prefer a hardware remote I am keeping an open mind until I have the app in hand. I understand the concerns but I also see the potential of expanding feature sets with a smart device.
I still remember when DCS came out with it's screen folks were saying the same thing about watching a screen. I said previously that I paid attention to running and realized I look at the remote more than I thought I did. Your mileage may vary. I'm sure if making a hardware remote is as easy, and inexpensive as folks here say it is and have all the features people want then Lionel might take a hard look at another remote but I think getting Base3 out is a priority.
When they release a new feature not supported by the hardware remote but in the app they'll have to hear it all over again but I guess that's life. I'm not sure they can satisfy everyone.