i Think there is a lot you could include in a dx Scarecrow figure. not just his standard suit (with jumper and red tie - this is absent from the only existing Scarecrow figure) and straight-jacket, Cillian Murphy heads (with glasses, under effects of fear gas, normal, mask spitting out bat, mask covered in maggots ect.).
it could also include
1. the tattered suit he wears in 'The Dark Knight'
2. the judge robes he wears in 'The Dark Knight Rises' (complete with broken glasses and gavel)
3. the fear gas deployment apparatus as seen (briefly) in this link
https://www.anyclip.com/movies/batman-begins/turn-the-fear-to-crane/
4. the gasoline and lighter from when he sets Batman on fire
5. the hollow drug filled rabbits (what a weird sentence to write) from the narrows
6. the briefcase with the hidden fear gas switch [ame]https://www.youtube.com/watch?v=HjrcrrlHRng[/ame]
7. the chair he is questioned by Gordon on, you can see it here
https://www.sideshowcollectors.com/forums/showthread.php?t=53931
8. Arkham Asylum scenery
9. reports/patient files/toxin formulas/notebooks to either act as the insert artifacts (like the life-sized cards in the Joker dx figures) or mini to fill the briefcase
here are some ideas - lets cross our fingers for a dx Scarecrow!!!