I'll leave my opinions here
we need to accept a fact is that things are always being developing, so osu! is. the osu community has developing for 5 years, there's more and more players and mappers nowadays. the average of the play skill nowadays is much higher than what you thought, also the map difficulty. if we put an usual Insane diff which ranked in this year into 2 or 3 years ago, I think mostly of people would say it's overmapped
about this map, it's a bit hard to play, but it's acceptable nowadays. just like what 0108 did, he put many unreasonable jumps and streams in his map everywhere, and he became one the best of 2012
this is a precise tangible that osu has developed, there comes out many new things, maybe someone don't like new things but please remember: reject new things, there won't be history anymore, it'll be the end of the dynasty