Adding a little salt to the mix is a good first step. I don't think it changes how they cook, but it makes them taste a lot better.
As for the pan, your stainless steel pan should be fine. If the tortillas are thin enough, you don't really need a lot of thermal retention (and your stainless probably has an aluminum core to hold and spread heat anyway). First step once they're in the pan is to almost immediately flip them. You seal off one side so too much moisture doesn't escape. Then cook as normal. Good luck!
Router and template! Use a band saw or jig saw or even a coping saw to cut out the shapes in MDF or something. Use a 1/2" drill bit as a template and draw on your rounded corners. And then sand or file or rasp them to shape. THEN use a flush trim router bit and go to town!