Our circus haunt this year is going to be called "The House of Laughter" and on our sign we have a big red "S" in front of "Laugther" so it reads "The House of SLaughter". (Here's a link)
I think it would be cool if you were to have a sign, and have something similar. Off the top of my head you could have "Buddy Bros. Circus" And have grafitti, or bloody text, and have the sign read "BLOODY Bros. Circus"... I think it shows that there was a circus there before... But now freaks have taken control and start killing people, etc. Just my two cents!