i drilled a couple of holes in the rim of my crusader so that i can use a piece of wire or similar to make a bail handle for it should i need to.
as for your idea launditch, i like it, i think it'd be great just as it is (maybe with a splash of the old hi-temp paint) for static camps, if you're prepared to carry in dutch ovens, tripods, grills, pot hangers etc. then a mug hanger is neither heavy nor awkward IMHO. hinges, threaded handles, bendy bits, all irrelevant, it's still gonna be too heavy for most people to even contemplate putting it in a rucksack and carrying it anywhere, leave it as is and just add it to the half tonne of cast iron cookware that a lot of us like to use for fixed camps.
stuart