One is to switch off the black bar between threads, which I think helps make the board look a bit desolate.
The other, possibly controversial, would be to switch on the mobile option. It gets rid of the header image, but the board is currently really hard to read on a phone.
Also the message box is kind of small, I think it used to be set to '50'
I am a control freak pedant, sorry.
By the way I don't mind doing this month's payment if you want.