Ability System is like masteries in league of legends.
Ncsoft is dying slowly. They are stealing ideas from other games and they only care about money. Their servers are doomed by bot families (and they recently announced that they banned over 10k accounts for botting) but they didn't mention that "we unban players with strong wallet". so if anyone payed over 4-5-6k euro (or dollars) to them, he/she gets immediately unbanned.
Forum is luck of moderation, servers too. Even the answers you get from the "support system" they're automated.
About 1 month ago, my friend got scammed (from keylogger) his 99 dagger/98 dual yul/80/80 with epics ++ seraph ++ weapons on chronos, he made a ticket, he got an automatically reply and when he explain ncsoft what happened, they gave him 40 diplomas to take Event items from Mentor NPC!!!!!!!!!!!!!!
He forced to quit the game.
Same situation happened to another friend on Innova server and she got her items back!
Do not trust ncsoft, dont go and play there. I downloaded aion NA just to see it because it's free and when i logged in i saw adena (or w/e the money called in aion) spammers exactly like their L2 servers.
All the updates NCsoft is doing it's usuless. Re-vamping the old areas for 99 lvl BOTS. Go read their forum , 2 or 3 topics mention bots and ncsoft is not doing anything at all.
From the other side, Innova keeps the gameplay as meant to be played, without pay2win items on store, without bots (if you find a bot and you report it, it'll get ban within 24 hours). They keep their servers fresh and alive.
I made enough new accounts on NCwest because there were a few topics which made by new players like "i am new to l2, what server should i choose" etc etc, i explained them the situation and i got insta-ban in every new account - seems i care, NOT (lol). but there where excisting players who agreed with me :P