Currently it feels so anticlimactic when you clear a Monster Zoo and it goes from the awesome, adrenaline-pumping Monster Zoo theme to a standard dungeon theme. As good as the dungeon themes are, something is definitely lacking in the transition. Level ups and Dredmor kills get a bit of fanfare... I'd imagine Monster Zoo clearings deserve the same treatment. This obviously isn't as important as adding new features or dealing with bugs, just a personal quirk of mine.