Definitely sucks, but this was already previously noted in the thread back when the figure was released in HK. The prototype didn’t have the straps painted between the fingers nor the black dot on left hands. Sure, it would’ve been nice had they went ahead and did it, but can’t really complain about it or expect it when it wasn’t like that on the proto either unfortunately
I noticed this as well as I had the same idea of wanting to use these better scaled and sculpted hands for earlier versions of Jack. I figured it was sculpted as more of a guide so that it would be applied correctly at the factory rather than it originally being meant to be painted. Especially considering the proto had the fabric wrap as well.