Frankly speaking, I am very disappointed with the crown gears especially the level 65+ ones. There are totally useless. I am a level 68 death wizard and my best gears are the hangman's gears. I pretty much just wasted 12500 crowns for nothing.
So my suggestion is for KI to introduce some really useful crown items. Afterall, KI does need to make money!
How about giving us "Enhancement" add on to add 10% stats to any of the item we have and each enchancement add on will cost say 5000 crowns. For example, I can make my hangman's hood 10% stronger by bying the add on to strenthen it and it will cost me say 5000 crowns for it.