While I would like to have the ability for my wife and I to share a combined account with our own individual logins - it's not worth the extra $80/year, almost doubling the cost for only a limited increase in features. If it came with double the storage I might consider it, but even then I'm not sure I need that much more storage at the moment.
Please reconsider the pricing on the family plan as I will never upgrade at anywhere near that price. It makes more sense to just have 2 Plus accounts since it comes with the extra storage. With the amount of competition out there for similar cloud storage, it's getting more difficult to justify the cost of dropbox, so I was really expecting a minimal increase in price, if any at all versus the Plus plan I am currently paying for.