FilePost, since you do not support illegal content, why don't you give an automatic warning to anyone who receives a DMCA take-down notice? If they receive any more DMCA notices, then you ban them.
How does that sound?
Because at the moment you have people with accounts who get DMCA notice after DMCA notice (someone said 80% of their files are removed for DMCA!!!) and all you do is remove the files, then the member just uploads them or similar files again, you get another bunch of DMCA notices and the cycle continues.