My problem is that they killed the offline versions of everything before they had a useable product to replace them, and now, many months later it still doesn't work as well as offline versions did.I know it seems crazy, since the math was changed so long ago, but as someone that deals with this type of stuff at work, I can almost guarantee the part that handles the math was done a long time ago, and once the math was changed the DDI team gave them the option of delaying the full project X amount of time while it's updated, or release a "working" monster builder with the idea of adding a patch to fix the math afterwards.
I'm sorry but it really does feel like they are milking DDI subscriptions.

My personal bugbear is the character builder (which is still broken in many ways), but it seems like none of these apps work properly.