Some sort of img pre cache solution
Since Koken to day is generating presets when it's first called on (by a visitor) a Koken site can be/is seen as extremly slow!
There "should be" a way for admin to create these presets that the theme is using: before the visitor hits the site and gets the "penalty" for being the first visitor.
There are several psedu-solutions out there (http://kokensupport.varoystrand.se/viewtopic.php?f=18&t=31) that does this for the admin: but all demands that you have shell access to you account.
If we worries about shared host getting overloaded: one solution would be to restrict how many images that is proccessed in each batch: and that way keeping the server load at a minimum.