I remember events from old times, new opened areas just for the event, unique monsters just for the event, legit challenging events with legit rewards, those were the events that made you go "oh shiet, I have to clear this weekend schedule, can't miss this", those were the events that made you hooked on the game, made you think "now what will they do, I'm exited", now... it's just the same every month, dia events, luck glow, fair, non-break double valour, repeat.
Sure you can argue, "level up for a change of pace" but then what? eat, sleep, repeat again? then what? level up again? let's be honest, the fun we have nowadays is not better than a collectors card game, we gain money, upgrade stuff to get more money, to get more money, to get more stuff. What I think this game needs is a legit fun event, a challenge not just in strength, not to see who collected the better cards, nor whose daddy has the biggest credit card, but something FUN.