In the absence of anything new I can purchase with beanstalks, my fairy tale castle has stood idle for months.
It takes up space that I would rather have available for other more useful work yards, but if I delete it and new content finally does come in, then I'll have to rebuild and upgrade it again - an extremely costly and time consuming matter.
It's a pretty building, but pretty isn't enough, especially when there's a big ugly Zzz over top.
so…
How about level 6? an upgrade that doesn't add any bean processing capability, but adds new population capacity. Perhaps 100 - 150 to make it worth the space it takes up.