will this be an option?
like regular steel, stainless, magnesium etc.
imho should make a difference in how long the thing would hold together, because obviously regular exhausts rust away in a few years time
Too much detail I’d say 
not really feasible to consider when weighing up gameplay aspects and flow vs. complexity
and i forgot to mention weight, all of those exotic metals weigh less then steel AFAIK
Still, weight is probably the most relevant in this one for all I care, and I think its too much of a hassle for the devs to get this in good rather than it enhances gameplay.
true, but hey, had to ask 