I'm probably in the minority here, but I absolutely love the V1 Joker sculpt.
If I end up getting Bank Robber Joker, I really don't think I'll use the extra head on my V1 Joker. No, it's not as movie accurate as what we're getting in a few months' time, but it is an amazing depiction of "The Joker" as a character and, in Nolan's words, a "force of nature"
To me, the look of the V1 Joker is perfect as is.
And so is the look of Bank Robber Joker. They are two completely different entities IMO.
If I were just a buyer of figures and didn't use them for artistic purposes, I'd probably be hating on the v1 after seeing the v2. However, for the purpose of creating art with the figure, v1 head, as I felt the day I placed my order, is perfect for capturing something powerful in photos and graphic works. v2 looks like a perfect little Ledger, but the particular emotion of the face isn't as conducive to creativity to me, so it's sole value for me is it's replication of the screen, but no added value for my work.