The main problem is that the commonly sold exotic wires are very suboptimal. They have too much mass and waste tons of energy. This is critical to understand if you want to have a good time with, well, any kind of build.
The mass to surface area ratio needs to be as small as you can get away with and still have a managable build. While I don't have written down an established formula for that it's still a good rule of thumb to choose wires for builds.
Fat massive coils are what I call kamikaze builds for mechs, dual coil near .1Ω so definitely on the edge regarding safety, the battery will suffer and be empty in no time as well as unusable after only few months.
They're not really meant for regulated devices where you're free to make just about any build.
Take advantage of that and choose light builds with big surfaces. Depending on the material those can still be pretty low resistance but they will heat up quickly with far less power and in most cases even produce more vapor and flavor than the overweight builds, being more efficient at transferring the energy to the surface of your wick.
Coming back to claptons, my own experiments gave me about 26g as a lower bound for core wires and 36g as a lower bound for wrapping wire, everything below will only increase mass unnecessarily (and 26g core + 36g wrap isn't the quickest coil either already). Flat/ribbon shouldn't be below 38g in thickness, rather go up in width from there (doesn't matter if used as is or as core for a flapton).
If you take experiments like those from Morten Oen (YT) into account there's another reason you don't want thick wrapping wire claptons, they will be aerodynamically inferior and have worse flow around your coils.