I'm lvl15 and all my skills are currently at lvl1 and i don't have that much of a problem with blood costs, yeah it sucks to lose a large portion of HP to use skills specially in PVP but i think it's the only thing that stands between it being a spam feast and having just a little bit of skill in using skills wisely. But again i'm still lvl15 so i'm not sure how it is at 20.
On another note i think skills overall need to be toned, the difference in dmg between low-level and high-level skills are huge which leave old skills nearly useless compared to new ones, hence, from what i read, FB/VS/Leap combo is the most used at higher levels, so i think they need to bring all skills on a somewhat even ground in terms of dmg, allowing more flexibility in builds, i don't think that ppl at the current skill state even dare to try new builds unless they got the extra $$ to respec from now and then.
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