GCD on Macros?

[Canadane]

You can use /micon Jump for a custom icon in your case. The macro icon will look and act like Jump. Or whatever action you want to assign it.

However, as others have said, macros don't queue. Macros cannot sync up to your GCD timer based on skill speed. Macros are only going to hold you back from optimal play. I won't even ask why you'd want to jump right after Full Thrust, but you just do what you gotta do.

[Waeksyn]

I don't think that actions actually queue outside of macros. You can fire an action early because of lag. While on your side, it looks like your GCD is not ready yet, at the server (one round trip of lag away), it is. Macros must use a client side check, which would remove the lag effect.