Hehe, but Koniko is right there, as linked topic is about making completely new set
Tell that to the person who made a My Little Pony* playable character, for Fallout 2. . .
Not an entire team, just a fan of that show, that decided to create a completely new set, alone.
If making new characters were
always a painfully slow journey, he would've given up on that project - it's "for teh lolz".
It would be a "pain in the ass" like Koniko said, if the user he replied to, wished to complete the (holding/attacking/reloading/etc) animations for all the melee weapons, firearms, and other animations that Marcus is missing (like climbing a ladder), in such a way that the player can control him to the end of the game, without a single CTD, due to an incomplete animation. And trying to make the sprites without a loss in quality, constantly comparing what he's doing, with the original sprites for the super mutant.
I made new sprites for the "Tarzan" critter (male Chosen One, before getting a Vault suit), adding knife animations for him. Things like stabbing, and idle animation (throwing the knife upwards).
I KNOW it's tough, to make the frames as close to the original models as possible. And I know that unlike me, some people don't mind the SF peasant, casino bouncer and other things that, to me, might as well be permanently removed from the sequel, and will create / edit critters, without caring too much about how good their sprites look. Nobody is FORCING ME TO DOWNLOAD them, so it's all fine!
* Yes, you read that correctly!!
It's a crazy, crazy world.