also.. since only the headers added via the final location block will be used, does this then mean that i need to put conditional logic into that block to check the current url for particular paths - if some headers are needed for some paths only.. ?

since most of my served items will end in the .php location codeblock, if my thinking here is correct, i would essentially need to move nearly all of my existing location config blocks inside the php codeblock and then maybe use 'if' statements to apply headers in appropriate ways.
or am i missing something here?