Hello everybody,
My name's Arty, I lead the design team for the Promote Control, and hopefully I can answer some questions about the device. Christian, if this post violates the forum rules (e.g. by discussing commercial products with a manufacturer rep), I apologize - please just let me know, I won't do this anymore.
About the buttons and having them pressed - it's valid concern when the remote control is in "stand-by" mode (waiting for a command), however when an exposure sequence is active, all buttons except for Power are blocked to avoid any erroneous input (in "Manual Hold" mode Start button is also enabled). The Power button can be used to toggle display backlight or turn of the device as a way to cancel the current exposure sequence. Hope this helps

P.S. I will be looking over the current thread, maybe some of you can throw in a new idea or two on how we can improve the device. New firmware version is in the works, it might not have too many new features at this point, but we working out a few firmware-related ideas that might be promising.