Got a Tao to 36, realized Tao's pets suck and went to a warrior.
Got a warrior to 28 in about 15 minute and obtained some decent gear, its quite fun to play for the first hour or so, then it gets boring fast.
The event gives class items and too good exp, 133k for some snowmen is broken, you can get items from these snowmen instead of needing to hunt bosses, as well as decent cash, benes and exp.
After the event is over, you will be left with a small player base that want to keep playing as they are geared up and can roam around killing bosses uncontested, but you will have deterred a lot of people joining, why?
Well because you log on a server after the event, they are level 40+ geared with great equipment (such as heaven armours) and struggle to level, you get disheartened.
This is just personal opinion, and hence why I have stopped playing as I when I was playing I hated killing snowmen after awhile but it was still the most efficient way to level.
Also, your credit scrolls make them break on drop / cant store as they are still very much open to abuse.