they collected a lot of questions/answers from players. I believe that last event against Bakura (nobody created a 100% farm) they has a lot of 0/5 stars feedback.
I agree. The 4M event was really cool. But I think the reason people complain was Bakura's skill. (Destiny Board of Doom) I can imagine a lot of new players getting demotivated and no longer interested in the game because of that,
The reason they didn't make it 4 mil was because this event is shorter than Bakuras Event and all other gate events. They want players that dont have enough time on their hands to be able to get the Event Exclusive Icon since its so little time then usual. So do you expect most people to get 4 mil points in 7 days or whatever this event is to get the Icon.....NO . 2.5 mil points seems reasonable