I think the need is definitely there for others to try and tackle the likenesses of several of these characters. Hudson in particular still doesn't have a sculpt out there that really looks all that much like Paxton IMO.
While not perfect the Snyder-man head is as close as anyone is likely to get to Paxton. In hand it has more of a resemblence than the photos indicate. Paxton has very nondiscript features so without sculpting one of his goofy expressions it's going to be difficult for any sculptor to capture his likeness with a neutral expression. I'm opened minded enough to realize a better version may come along. In the past Snyder-man's mom has gone back and reworked sculpts that didn't get much attention (Liam Neeson/Brian Mills is one example). While thier Hudson head isn't starting any fires here I'm told it's doing really well on ebay so I doubt this version gets reworked. Still looking forward to Snyder-man offering the Predator team. Kearn's are nice, but I want to see Joy's sculpts before diving into that group of customs.