I'm also feeling pretty grumbly about the declinable Quest that asks you to buy Knowledge Points even when you ALREADY have a Slow Blink because your KP bar is already maxed out.
A lot of our users only drop by once a day, so they'll usually have a full KP bar while they're waiting on Goods, Coins, and Supplies. It would surely irritate ME to be asked to buy more of something that I already have too much of.
(My English teacher said I shouldn't use a dangling participle, whatever that is.)