I think that this will be a great selling point for coal units. If you go away and have a house-sitter taking care of your place, it is a one button operation.
I think that many coal units were NOT sold due to the fact that the 'lady'of the house didn't want to get near that 'dirty mechanical thingy' or get involved in getting it lit. But push a button?? yep!
As long as it is trouble-free I think it will go over big!
For those who live in a more temporate climate where it may too warm for days on end, then cold for a day or two, this will be just like burning oil, gas or electricity.
Now, how about an automatic ash removal system??
[just kidding, I'm not THAT lazy]