are you using in your alts comething like

/assist [target=Aelli,nodead][target=Aellie,nodead][target=Aellii,nodead],etc...

/cast spell

?

i was thinking about to use that macro in my alts and if i press CTRL then something like [mod:CTRL=target=focus] so if i dont press CTRL then i cast on my target and when i press it i cast on the focus.

if my main dies then i change of window to my alt and then pressing a key i change the hotkeybar of that alt replicating my spells but with no macros. (the other 3 are still using the macros hotkey bar but they will /assist my alt because my main is dead)

right now im not using the focus to target my opponents but i really really really hate the second of lag in my alts when i change of target with my main. i have lost a lot of arenas because that second of lag. 2 shamans use EM+NS+CL in 1 target and the other 2 shamans in other target for example )