Disclaimer: Whilst I've been roped into playing SCH in progression teams, I don't consider myself a career or top tier SCH at all so my methods may not be to everyone's taste.

My first SCH stint was in 2.0 for BCOB, I didn't know better and macroed embrace onto everything, I still cry at night thinking about it.

For the curious, actual testing and parsing further down the line showed me that doing this cost me a couple of GCDs a minute or roughly 10% of my throughput. Naturally the macros went in the bin and I went back to the drawing board.

A simple way to spam your fairy with embrace casts is simply to bind your mouse wheel down to your embrace hotkey and spin away, bonus points on offer if you can free wheel it (A G900 can spin for 15+ seconds with one flick!).

Personally tho, for 3.0 and Gordias progression I settled on a method that did use macros, but only for embrace itself, everything else was direct hotkeys so my personal throughput and ability to queue stuff was completely unaffected by the embrace macros.

First up, I had 3 hidden hotbars, two were the same bar but adjusted for either Eos or Selene and I used the macro copy function mixed in with my Fairy summoning macros to apply the relevant abilities to one of my visible bars to save having either macros or redundant hotkeys on important abilities such as Whispering Dawn and Fey Illumination.

The third bar was simply 8 macros that would cast an embrace on the corresponding party slot. With a 9th specifically for Rouse/WD. These were mapped to a repeating macro on the matching programmable G key on my keyboard (via Corsair's obtuse but capable software) that would spam said macro on a toggle. Simply put, tapping G2 would spam embrace on party slot 2 until I tapped it again, hitting my 9th key would pause the embrace spam, interrupt the current fairy cast, then cast rouse and whispering dawn and then resume the embrace spam again.

My thinking behind this was that the fairy seems to operate on a slower GCD than the player so simply tapping embrace in time with regular character ability wouldn't always actually line up correctly whereas mashing embrace for 5+ hours straight for 7 days a week wasn't really an option either. This seemed like a great compromise to me and really let me maximise my fairy throughput with no impact on my ability to DPS or queue casts.