Understandable, but how about including only one interchangeable set of seamless arms for the "default" poster pose which is holding a gun with his right hand and a relaxed left hand? Since the watch is hiding his left wrist anyway, even only one seamless wrist is enough. I think this figure would benefit a lot from seamless wrists.
Another option is if it would be possible to make the body compatible with third party seamless forearm sets like the ones from Worldbox and Eleven X Kai? They use the standard double jointed elbows. Similar to Hot Toys interchangeable lightsaber arms.