Theres not enough macro space to play Ninja.

[Zumi]

Assassinate/Mercy stroke has to macro'd to every attack AND most cooldowns also macro into attack buttons, otherwise theres just too many buttons. 12 is the most ill ever button.

And since its a melee class I will want to macro Target Enemy to most of the attacks.

No and its not only my problem. IM sure there are others out there without enough macro space to play ninja.

You should not do this. Just place mercy stroke on its own when it lights up you hit it. Macroing all those abilities is a bad idea.