That's pretty much in-line with what we can reasonably hope for and what they are saying publicly for next season. It's unfortunate that it has gotten to this point where a 5 year rebuild is needed, but, being realistic, this is going to take a complete minor league rebuild to have any chance of short-term success.
I'm probably not as optimistic on them spending significant money though without ownership change. Even with Reinsdorf, they will eventually spend more money, but we'll never be able to keep any young pitching or sign premier free agents so this latest rebuild will depend on young talent. Right now, they are doing well, but it's still another 2-3 good drafts away from being sustainable.