The perfect Maple boss fight

I think.. There needs to be a boss that will counter certain attacks everynow and then, kind of how pap goes into his defense mode only instead goes into "is now countering physical". NOT def/mag def buff but something that will keep the boss from being pinned. There also needs to be a boss that can do demi attacks (drop hp by a %, not actual dmg). A boss touching someone for 12k is just stupid. Bigfoots (?broken?) knockback is a nice wake up call, but the lack of platforming just makes him no fun. It would also be nice if a boss could duplicate it self..