Looks like they didn't ask and assumed they could replicate the popularity bride contest without thinking that if different girls get selected someone has to draw them out, or they thought it was not going to be an issue and still didn't ask. It really isn't that big of an issue, other than another company telling you what you need to do, which like I said it is most likely the reason it got cancelled.
- - - Updated - - -
I'm guessing Nutaku looked at the potential costs of hiring those big name 6* artists, got really pale and quickly pulled the plug. On the way out, they decided to shift the blame to JP Devs, who we will never hear their side of the story