I hadn't considered it but your point about T&D with electrics is a good one. In my experience the pleasurable part of the electro play spectrum is a fairly narrow one between "can't feel much" and "OMG, can't take it!". Combine that with the way people all seem to have different tolerance points for electricity and it takes a Domme with skill and experience to thread the needle.

It's far less challenging to tie someone down, wire them up and then crank the power levels until they are struggling against the restraints and screaming into the gag.