My Xlights request, months ago was much more basic. I currently run LOR and use input triggers (6 to be exact) which are selected from a "visitors' control panel" that I built, which is in the parking area.
All a visitor has to do is to reach his/her arm out of the window of the vehicle and push one of the red/green or blue 2 inch diameter plastic buttons to select their song. It's gotten very popular, and it for this reason alone I have not explored using other software (Xlights, LSP, etc)
The trigegrs offer no rf/wifi/other concerns. No need to offer instructions in the display on how to make selections, other than on the panel which says "push button to select song".
If folks go the smart phone/wifi route, how would you plan on telling folks :
1) it's available
2) how to connect to it
3) and even possibly how to use it
Seems like a lot of information to convey to people that drive up to watch the lights, who half the time don't seem to read the much shorter message signs many of us have.
Remember a few years back how many had trouble even getting folks to realize the blinking lights were sync'd to music transmitted on FM?
It sounds like a neat idea, but because of the above I am not sure how practical it would be...
Greg