Buffs should be something special on official server. I vote for christmas etc only! EDIT: Great poll. Let's RF staff see this and stop this madness unfair advantage for few people at night (my time)
The buff should be given at all times through loggin. My skills are extreemly low lvl compared to my lvl and i have been using kungfu boost + manuals everytime i grind. Not to mention drop rate is terrible and non cash shoppers cannot make any money because they consume more gold on passes then receiving any drops. Plus, drop rate for KJ dungeon will cost you 500 mil worth of passes just to create red banner.
The server buff should be given only on special ocasions and events , as it has been done before on official servers . As it has been said already you got the attendace event which gives x15 xp cards which are enough . I just hope the buff won't contain xp boost because they xp rate at this point in time is perfect , the only stuff which need to be buffed are skill rate and drop rate. Any other buff like all attributes ,crit% or anything like that are welcomed to.