Sentinels/Marauders, the new 4x DK?

[chazz]

Chazz's system is easier to implement I think, as it cycles the assist/follow target through a single key as opposed to my four toggles. Either way will achieve what you want, the ability to quickly change what slot you are assisting and following with your alt.

Actually my system uses three keys in total now in 'Version 2' (for a triple-boxer), but it allows for setting it up in a few seconds once and then be able to instantly switch Lead by switching character. I got myself a third account because of this.