If you're using DC to transmit the same amount of power, you'll probably be using similar voltages (otherwise you're going to need thicker cables). I suspect DC is probably a greater fire risk in this case due to arcing. An arc is less likely to persist on AC since the potential keeps passing through 0 V (hence DC switches are designed to have a bigger air gap).

If it's just a matter of providing alternative circuitry for low-power devices, presumably you can already improve safety by just using lower-current circuit breakers.