That seems awfully specific to claim the game "needs" it. If anything I'd say the game "needs" proper fleshing out of its existing core mechanics more than anything, to ensure any future systems and content aren't built on a broken foundation and collapse later when things get fixed. For example right now the "most efficient" way to play is to spam a ton of traps, tame the rabbits and chickens, and have them generate all the resources for you while you ignore most of the natives. The moment you have human female characters in more than 1 location raids become an annoying nightmare, most buildings are not worth the cost or are outright cosmetics, and the entire cooking system is just stupidly imbalanced no matter how you look at it. No idea why you want to encourage fishing or coral collection either as those are some of the most boring, grindy and disconnected aspects of the game in contrast to e.g. mining or farming which should in theory make you engage with the exploration, combat, equipment and base building systems (except you can just run the same section of cave over and over or plop down a mine staffed by chickens so it doesn't really work in practice).
And as far as adult content goes you seem a little biased too. Nothing wrong with what you suggest but why should animal hybrid features have a higher priority than allowing the female protagonist to grapple and rape enemies for example? She's perfectly competent swinging a giant axe or club at monsters, but somehow slipping her hand down someone's pants is a no-go? Or why can't the male protagonist wear the dresses? Why are androids incapable of wearing anything? Why can't we piss and shit on our victims to humiliate them before we kill them? Why can't we breed an army of magical half-giants? There are so many things which could be added, and as far as sex and gore go it only boils down to personal preference.
