well
i have stop to dev but as i remember l2jarchid has...
1st it's not bug.."Developers" want to learn skills when you go to class master and change your class..
at L2JArchid you must made a rr..
2nd Multiskills bug..you can stuck your skills..you dont have the right subclass protection..something with floodprotector maybe..
also you dont have all skills fixed..a lot of skills didn't make the thing that it said..
sometimes castle sieges become another time as they says..something with configs...
i think that you make a good pack from addons side..pvp color system, pk color system etc..
but you dont fix the things of l2j as the l2jarchid pack based...
good luck with your project!