For those who do have the previous bale bats figs I don't blame them for canceling considering the only difference is the Bale sculpt which they can get off Ebay.
I know its gonna look like stating obvious details, but its more than just the headsculpt. Even the reused elements, like the suit and the neutral mouth piece look better on the new Begins Bats. The mouth piece is painted to the standard HT displays today(which made a noticable improvement on the look of the cowl), and the suit rubber has a much more eye-pleasing matte finish. It doesnt seem much, but from the video-reviews, and SDCC photos(Michael Crawford pics for example) it can bee seen that the figure has a better overall look, feel and finish than the OC Bats.
Personaly I consider the design of Begins Suit, as the best looking film batsuit. It has the all the classic lines, and iconic Batman look, while adding that bestial element to it. Not to mention more high-end materials and finish. Bale is in many ways, a fantastic Batman, and Keaton is my childhood. One is fierce, complex and multifaceted, the other silent, brooding and psychotic. Both fantastic potrayals with their own set of unique strenghts. Most important though, both look AMAZING. Both look itimidating like no other 1/6 figure, and both have the iconic Batman look. Thats way I am gonna try to display them together, even if it means selling my kidney, or transforming my room into pot hydroponics field. For me its more important to get both Keaton, and Begins Bale, and be able to own two definitive Batman figures, rather then shell out on Keaton and Nicholson.
Thats why on one hand I want to say: Dont let go of Your Begins Bats, its awesome! On the other though...well, I am currently on the wait list, so the more people drop out, the better my chances get.
He is like an angel. 
