Dear little Sims, a few things:
Vampires: can I please remind you that you do not yet have perfect sun resistance. When visiting friends in Sulani, please can you not take yourself off for a swim in daylight, or at least go home when you know you're getting sunburnt instead of just standing there getting crispy.
Mermaids: I can clearly see your tail in the water, other sims can see your tail in the water when you approach them, the swimmer you spoke to the other day was also a mermaid and you could both see each other's tails in the water. You're not fooling anybody so stop denying it! You do know you're a mermaid, don't you?
Spellcasters: to those in higher ranks, may I ask why you are still getting beaten by novices in duels? I did not put you through all that training and studying to perform belly flops every time someone points a wand at your face. Please do better or I shall have to take action.
That is all. ?