Unless this changes are only planned for the upcoming 2.0 I'd do a little more research before doing more impulsive changes. Game balance that affects only a portion of the playerbase is quite sensitive in my opinion...
If that's how it's supposed to work ok, but I have to disagree on the destro "balance". Mostly because he is slow and lacks of any ranged attack and, with this change, the only AoE attack it has won't crit anymore... Tyrant, for example, sports the -IWin- Punch of Doom (maybe the highest damage skill?) that can even crit and 2 AoE skills (one ranged ) both with chance of crit... Anyways, I just wanted to know the reason for this changes, not discussing balance... Lineage2 was never a balanced game anyways
I'm not expert here but I think there is no magic spell/nuke description that specifies critic chance neither. I always assumed any skill have a chance of critical by default and skill descriptions were just poorly written. Anyways, it's a bit sad for destroyers, since, I think (I don't play destro), this leaves almost all their skills without critical. Have this been tested in ALL classes?
I'm gonna have to start recording too, because my party (that is shown in your video, with Rolan and company), 20 minutes earlier, took that farming spot from a full party of Vigilance who did Party Return so quick they even forgot to pick up the drop