Well i'm personaly am a big fan of the ftl and its mainly because of this reasons:

flexibility : You have no 'Main'-Toon and because of that you can switch anytime to every of your toons and let them the 'leader'.
This can be very usefull in PVP, but even when doing quests (like gathering ones) its nice.
focusfree: as i'm playing a five-class pve setup i can use focus for cc or other reasons.

If you want a fast ftl-setup I would suggest you look in the PVE-Oriented version in the wiki , as this allows you to be leaderless and focusless with only two keys to setup in an ftl way... (if you need any help, feel free to ask (i'm familar with setting it up in keyclone and hotkeynet)).
(For a general HotKEyNet-Guide see: [HotKeyNet] Guide: HowTo use HotKeyNet for boxing
for implementing an ftl with hkn see my sig)

IF you don't need focus for cc or other reasons, maybe zanthors system might be a good alternative, which bases on jamba and the use of focus.