I thank everyone for their contributions. Theoretically, we should know a lot more about Kit Packs tomorrow, but as we have learned more my opinion has already started changing a bit due to the new organization of Kit Packs.
To be quite honest, it makes me skittish. At first I was somewhat relieved that it was still a pack and had assumed it would get its own shelf on the pack tab (maybe a new tab in the library). Instead, they seem to be disassociating themselves with the pack part and focusing on the "Kit" part by giving it it's own game tab away from the usual packs.
Now this may be reading into things, but I think this and the debut packs show how few rules kits will follow. The content could be anything, like a Sims 3 Store bundle. Plus, because they are "Kits" and not traditional packs, I now suspect they are going to buck the unified pricing. It is possible that it will not be immediately, but I heavily expect some sort of dynamic content pricing. They have gone through a lot of effort it seems to paint a picture with the organization: new thing, new rules.