If they make it so you have to hold the buttons down the whole time, everybody even remotely handy with a soldering iron WILL be wiring in a foot switch.
That eliminates the safety factor that the buttons now give you, which is that your hands are out of the way at the start of the cycle, which is the biggest concern, IMHO.
I thought about putting a foot switch on mine, but really don't feel it's at all necessary, as I tap the buttons as my hands are on the way to get a hull and wad for the next cycle, which is the real time saver over pulling the handle.
Don't forget, either one of the buttons is an emergency stop, if pressed during a cycle. Also, if something is in the process of really jamming up, the fuse will blow.
They don't need to mess with an already great design.JMHO.
Bill