Nether Shield for sure, if you think about it, how much damage are you really going to reflect back at an attacker? you might deal 200k dmg yourself, but reflect dmg will only be a max of ~50k, with 75% dodge you cant really make good use of it, and if you use a shield its even less useful, and attack speed does not increase the cast speed or Burning Blade, only cast speed does. Also, if you want to get the most out of a Fire Shield you would have to first build up 50 Hellfire so you get the buffed effect of 270% reflected damage, and even then its really bad since you dodge, block and reduce the damage you take with damage reduction, so the reflected amount wont be all that much.
Not to mention you need to get hit for it to work, and even then if you only get hit for tiny amounts its basicly worthless (i would argue its worthless even if it reflects 50k due to having to TAKE dmg for it to reflect). You can not use 2 shields at the same time atm, tho i think it would not matter atm if Salan makes it psosible anyway since the best specc for the Warlock does not rely on ANY shields atm anyway(you would end up nerfing your character if you run 2 shield specc in my oppinion even if it were possible to stack the shield effects)
Stone leap is a poor version of a teleport, use 1 point in Fractured Reality instead, which is a teleport if you need to escape from something.
The TL2 Wiki was removed due to not being able to finance it (at least it seems that was the reason) so currently theres some german homepage i think that provides a tl2 skill calculator, but you can just use a respecc potion anyway, unlimited respeccs in synergies so you dont have to be stuck with 1 specc on your character (tho 1 will most likely always be hailed as the "best" anyway so not like you gona change your specc later on anyway unless Salan changes some skills)