It's a pretty solid build. DI is a good opener, but not necessary. If you happen to be in a middle of a group of monsters, you won't be able to use it again until all are dead. 1 versus 1, it's great but I would honestly say, anymore than 1 v 2 it has diminishing returns. I do have one point in it on my Assassin, but in end game, I'm finding it much better to open a fight with Shadow Assault. Starting a fight with it will allow you to use it more frequently throughout the fight, very beneficial in saving HP if you're stuck with a group of monsters.
Poisoning Weapon at 1 is fine if you plan to solo outside of Raids. Outside of Raids, especially if you proc crits often, Poisoning Weapon won't matter much as most, if not all, field monsters don't have that huge chunk of life to cut through in comparison to the damage of your skills when they proc crits. If you plan on farming outside of Dungeons and Raids, then you don't need anymore than 1, unless you're farming group field bosses like Goblin Leader or just want that extra tick on miniature field bosses like Poisona.
I put the 3 points you have in Poisoning Weapon into Shadow Assault because of that.
41/41 is a good, solid balance for an Assassin. Your main stats don't matter too much in comparison to what your equipment gives, it's only a minor boost. At level 50, it takes roughly 10 points in AGI to equal 1% Critical Rate. So Mark of Genocide and Shadow Cloak is a big deal if you plan on critting often. 7% = roughly 70 points in AGI at level 50, to achieve that crit rate. HUGE. It also means that going that extra 10 in AGI to cap your AGI at 50, would only give you a 1% return in Critical Rate with a loss of 24 base Attack Power. Going full STR on an Assassin is roughly a loss of a full 1.1% Crit and a gain of only 18 base attack power based upon the stat values that guide gives.
So yes, 41/41 is a solid all around build with Assassin's self buffs and Shadow form.
The only questionable skill in your build is Dark Illusion, it's not a must have to pump out damage and for your build and purpose, it would be more beneficial I believe to finish off Poisoning Weapon since you already have it at 4/5, this way you're also hooked up for those longer, drawn out fights.
Edited by archedemon, 07 July 2013 - 01:13 PM.