Hey DP.  Gotta say, the list is brilliant!  I agree with most of it, only I don't really consider Catwoman a Batman villain anymore.  Here's my list: 
 1. Joker 
2. Hush 
3. Jason Todd (Jason and Hush are interchangeable) 
4. Scarecrow 
5. Riddler  
6. Owlman (He counts)  
7. Two-Face 
8. Bane 
9. Man-Bat
10. Harley Quinn