+1, that is why SemiAutoMatic will always be a sped.
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all lvl 18/20
just gonna end it here
lvl 9 skills:
http://img824.imageshack.us/img824/8131/13876082.png
lvl 20 skills:
http://img687.imageshack.us/img687/8097/91283813.png
see who has the higher dps :) right click > view image
424976 avg dps from lvl 20 skills
411701 avg dps from lvl 9 skills
Don't tell me the Korean WIs are failures because they don't have their EDC, Met, or SC at lv20.
Here is proof, check the WI BM2 at 7:53 on Ispita, notice the cycle of her skills.
http://youtu.be/4Tl9BsjgwWA
Basing on DPS is nice but it's never true because you cannot ever have a full 90s BM. In most situation, you always have to position yourself first before a fight.
My conclusion, there is no ideal levels for WI skills. I suggest you put them at low levels first (lv9 or 12), keep playing and experience and choose what is more suitable for you.