Don't know what you mean by this, there's no way to spam darklight unless you're running low tier dungeons all day and hoping to win drops of the appropriate craft.
GSM is still the easiest anyway, almost all accessories are GSM while the left side is divided up between ARM/LTW/WVR/and sometimes also GSM.
Only non-GSM accessories of note (see: high level) I can think of off-hand are some PvP pieces (moot point, just don't buy them), some of the i70 crafted pieces (likewise), and moogle ribbons (WVR).
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