I was sad not to see a bag of snowballs memento like with the mudballs.
MJallday
There are at least 2 more delayed unavoidable CCs: NB fear trap and warden Arctic Blast stun. There are a lot of avoidable delayed CCs, and some of them are worse than warden charm.
You probably never saw one of another in action because you are not playing long enough. Both was used previously by some outstanding players. Not they are just out of meta. This topic about delayed CC and burst opportunity is old and the only thing I can say - it is skill issue. It is pretty unique mechanic, but there is nothing you can't handle.
Problems with current charm are:
1) it is easily accessible; you don't need any special skill to use it, so it is widely used and annoying - just deal with it, l2p;
2) break free bug;
3) displacement bug.
Last two can be fixed by replacing charm mechanic with fear mechanic.
IMO this topic is discussed now only because this skill is spread across average PvP enjoyers, so other average PvP enjoyers play against it frequently and just can't learn counterplay and don't want to learn. ZOs made this game too easy and made these people feel like everything should be easy, so when they met steep learning curve, they just can't handle it.