For what it's worth, i think a remote electrical system is "safer" than a match, with the assumption it's done right!
What i'd want to see as a minimum:
1) A single mechanical "KEY" is used to "SAFE" the system. Only one key should exist, and needs to be physically tied to the person who is installing the ignitor/trigger in the pyro device. That way, no one can fire the system by mistake when that person is close to the pyro.
2) When the system is "SAFE" the output terminals are actively, and mechanically "CLAMPED at low impedance" together to prevent any potential difference between them
3) Firing should require two inputs; ARM & FIRE, at least one of which should be a physically difficult to move switch, such as a mechanically interlocked toggle switch. That way, the device is unlikely to fire in the event of being dropped, stood on, etc!
4) Any "wiring check" low output current, should be carefully considered, and only connected when the system is ARMED.
5) The user needs to carefully consider the correct operational steps and stages to ensure safe useage, for example, trigger wires should be conected to the firing device first, so that they are forced to zero potential before being connected to the pyro trigger, and the pyro trigger should be connected to the firing device wires BEFORE being inserted in the test rocket etc (so accidental fires only set off the trigger, and NOT the rocket!)
One option of the mechanical KEY is to use something like a dual 4mm bananna plug socket, where the pins must be fully inserted to reach down and push open the output terminal zero ohm clamp etc. In all cases, consideration must be given to static charges and provide them a route to earth away from the pyro trigger outputs.
(Generally, with restive triggering systems, static charges will not contain enough energy to fire the device, as it must physically heat up a metal coil of wire to ignition temp)