If you're thinking ooh let's build lots of maids to start a takeover think again, all I got from building 2500 maids was a huge deficit, no customers due to the limit of ESCALATORS, a lagged up game and a tired finger!
There is one little fault with the game, of which is very inconvenient at the worst of times. The bow & arrow put on the castle always seems to stop working properly and just left me wasting all my mana on a last minute defense. Basically it is a very annoying fault and I'm sure everyone else knows what I am talking about.
Merry Christmas!