But you can replace the eyes and mould new lids. The eyes are the least of my concerns with this or the Han sculpt, so I wouldn't touch them myself.. And both looks mile better to me than DX07 - maybe my opinion will change in hand, but comparing photo to photo or photos to my in-hand DX07, that's where I'm at.
You should have waited and just purchased a parted out outfit and a single head for the hat if that's all you're planning to use.
A superb likeness is great to have and can be crucial in some respects, but I try not let it be the end-all of a figure. The whole thing has to come together and in many cases I can overlook likeness issues such as with Bespin Luke, Alice, Indy, etc. Or niggles like small crotched or short-armed Sideshow Sandtroopers and Tusken Raiders. I'm much more critical to likeness if I'm purchasing a single part or sculpt for a specific custom. But poor production, as you've mentioned, is also something that bothers me a lot more, I just don't feel that what I'm seeing of Luke and Han in these photos crosses below that line however. I'm hoping the product in hand isn't drastically different than on screen.