Let /hotbar put macros on hotbars as well

I'd like to make a Summon macro that automatically swaps in the correct pet actions. However, I currently have my Whispering Dawn macroed to Rouse to save bar space and keep them on a shared cooldown:

Code:

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/micon "Whispering Dawn" pet
/ac "Rouse" <me>
/pac "Whispering Dawn" <me>

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This means I currently have to keep no less than two copies of that entire hotbar, and swap them out with /hotbar copy, simply because there is no /hotbar macro.

This seems like a really strange omission, since you can set anything from waymarks to minions to your hotbars with this command, but not other macros.