"I will continue to buy MTH rolling stock and accessories, but no more engines until the future of DCS hardware and software is better defined and communicated."
If a large enough group of people did this, I bet MTH would get the message and find a way to meet consumer demand for the wireless remote.
I would buy 2 more of each, but only if the TIU is modified so it will continue to work with the remote (not a phone or tablet) on a wireless basis. No tether.