Evidence that Macros Do NOT Cause GCD Delay or Lost Casts

[Mikoko_Miko]

/ac "Transpose"
/crosshotbar copy BLM 4 BLM 1
/ac "Transpose"
/ac "Transpose"
/ac "Transpose"
/ac "Transpose"
/ac "Transpose"
/ac "Transpose"
/ac "Transpose"
/ac "Transpose"
/ac "Transpose"
/ac "Transpose"
/ac "Transpose"
/ac "Transpose"
/macroicon "Transpose"

I'm also using a similar macro. Mine only toggles XHBs (Astral Fire / Umbral Ice) and sets Transpose action on the slot of itself, so I need to press the same button twice to Transpose.

/macrolock
/crosshotbar copy BLM 2 BLM 3
/crosshotbar copy BLM 1 BLM 2
/crosshotbar copy BLM 3 BLM 1
/crosshotbar set Transpose 1 RAU
/macroicon Transpose action <wait.1>
/crosshotbar copy BLM 3 BLM 1

This is based on a macro I saw somewhere in Japan. I suppose that this type of macro should be allowed, even if using actions in macros remains controversial.