Ha.. Depends on the pan Bob.. and for power will maybe but not so much I would be concerned. Does a crock stay on or cycle don't know?
The Up Side on the plate is control eliminating need for other controls
A crock stays on. The water heater thermostat (or ranco) is needed to make them cycle. You could try one of those clay pans used under a flower pot to catch run off, might have the heat retention of crockery? With a gravity fed refill jug, you could keep the low profile. Also if it will handle the heat, leave it on dry to cover the exposed element. Do you plan to leave it always on, just at lower heat? Why not a thermostat? Just wondering. If the flower pot doohickie won't work, my wife has a stoneware cake pan that would work. made by Pampered Chef. I have no idea of cost.