This thread reminds me of the old Redneck saying, "Hey Ya'll, watch this!"
But, I am interested in this thread, as every 4th of July, we have a massive party and we try and set the fireworks off together. The big ones that shoot up in the air and ignite into a cluster of lights. We try and line them all up in like 10 of them to go off at the same time. We usually can't light them fast enough, or they start to go off before we can light them all. This results in ringing in the ears, of course. we even had one fall over, but we fixed that problem by making a custom stand with tubes to launch them all.
Having an electronic ignition, detonator, whatever you want to call it, to ignite all the fuses at the same time, would actually be safer to do this, then getting close and trying to light all those fuses at the same time with a match/lighter/propane torch.
I'd be very interested in a working electronic means to do this.
Regardless of what people say *cough* IanB *cough*, people are going to do it whether it is safe or not. If they ask for help, why not offer up your expertize to help them make the situation safer? After-all, they are going to attempt it anyway.
IMOI, for my situation, having an electronic ignition will be MUCH safer.