I also prefer omnibus format. Even if we know/can guess what will happen in the end, what makes the story fun most of the time is the process/what happen in between; and also for me personally, the after-story
(this is why I really wanted to buy Vita to play the upcoming PK Kiss, for the after-confession stories >.>)
Beside, with large number of heroines Photo Kano has, and 6 of them have 2 different stories each, it's kinda let down if they don't do omnibus. But that if this one a 2-cour
Btw, found a fan art, "Package Heroines"...
http://www.pixiv.net/member_illust.p...st_id=31991820