From the tag on your post [Innerspace], I'd recommend taking a look at IS Boxer.
I have a decent write up on my signature.

Also, www.isboxer.com, is worth checking out.
You have a ton of resources in one place.

As far as FTL goes with IS Boxer.
During the configuration, each team member is given a unique FTL modifier combination.
You can go with the default, or change them to your hearts content.

The keys selected here, will only impact three keymaps.
As in, you are free to use the same combination of modifier keys, for other macros or keymaps.
The three Keymaps which use FTL are: FTL Target Me, FTL Follow Me, and FTL Assist Me.
Every other FTL function, calls one of these, and then does whatever.

For example, the FTL DPS keys (1 through =), will:
a) Run.. FTL Assist Me, on the toon who you are on, which has all of the others acquire their target.
b) Press the same key on the slaves screen as the main.

So, all you have to do, is drag whatever spell you'd like straight from the spell book in wow, no macros necessary, onto the keys you desire.
You can place the "Click" macro, for a click sequence here.
You can place macros for healing such as /cast [help] Heal; [help,target=targettarget] Heal.
But the spells right out of the spell book, without any form of assist wow macro, will auto assist the correct toon, just by pressing the hotkey (1, 2, 3, etc).