I can appreciate that it would be nice to be able to use every single firestarter proc, and maybe allowing them to stack would be nice, however, I don't personally feel that it's necessary. Making all fire IIIs that are cast with firestarter receive the AF3 buff even if you cast it during UI is counterintuitive and goes against the mechanics of the job. I'd say some of these cahnges were needed if BLM damage was on average noticeably lower than other DPS, but it isn't, so effectively buffing their damage output by changing some mechanics around doesn't seem worthwhile.
