The packages seemed to be popular on the Oasis this past June. You'd think the bar staff wouldn't care for them but the bartenders I talked to said they liked the packages because they were still getting the tip money and didn't have as many of the annoying paper receipts to deal with.
Value-wise, yes, you have to be a committed drinker for the higher priced plans. The best thing they are doing is eliminating the 'everyone has to buy it' requirement.
These new rules are not in effect yet but will be this weekend from what I read. I found out about this on the Royal Caribbean UK website, but that info said it was going fleetwide and even had the age rules for U.S. sailings. As is often the case, RCI rolls things out on the UK site before it shows up on the U.S. website. Strange.