Yeah, I have the same Scarecrow. I also have the "in jail" version of the Joker, without his jacket. Love that look. I have one of the Joker bank robbery clown mask thugs on the back left, sitting on the ledge. The guy I bought it from had the Two-Face sitting on top of the Joker shot plastic, but it covered up the cool Joker face drop target, so I took it off. Still have the flying Batman fig, but seeing your setup, I might swap in Two-Face there. You can still find some of the figures at Toys R Us, and for cheap on eBay.
I still really like this machine, BTW.