We tried this briefly several years ago and found that it caused element ends to burn out prematurely. The element end is sandwiched between two nickel plated washers to increase the surface area touching the element end and securely and tightly fastened with a nut. The wires that go to these element terminals have ring type high temperature terminals and the wires themselves are double insulated to resist attack by the heat. Look carefully at how elements are terminated. It can be a great source of trouble.
Most electric kilns have grooves routed in the firebrick for the elements to lay in.
The elements are often pinned in for further support. There are a number of well known problems with this. After one or two element changes and a few years the fragile firebrick starts to fall apart and pins become the primary element support. It only takes one accidental bump with a kiln shelf to permanently damage a kiln around the element groove. Pins can actually make the problem worse because as they expand and contract they fracture the firebrick more.