My Suggestion (From what i have played and since i can't find a roadmap and don't wanna read through comments sorry if some of these has been said already)
-a better camera system (like free cam)
-Being able to pose your character (For Screenshots) like sitting for one
-potions
-Customizable Home (like being able to buy or craft furniture and workstation and where to place them) and Interactive furniture for sitting sex or other sexual actives like a milking station and whatever those semen collecting stations are called that are used for horses (maybe for a base for potions)
-Party system where you can keep, level, and customize their loadout npcs you find and like if this isn't in the plans maybe a way to invite them back to your house for your fav npcs so you don't need to keep looking for them (also this will give the option to use furniture to have sex)
-A way to delete or edit custom npcs you make (i have like 3 of the same npc cause i wanted to change something)
-Personity types (if you do the party system) like Dom, switch, sub in which they will like certain sex position and action more than others and if they like receiving or giving
-add toys and allow npcs to use toys also strap ons
-maybe a crafting and or building system if you take this game in a direction where you can claim and need to defend islands (and whenever you die you lose an island and if you go with the party system your party members and any npcs on the island have a chance of being captured and you need to Resurce them)
-Enemy npcs that can take advantage of you when they defeat you and vise-verse (there can also be enactments that help in this like a aphrodisiac one or weapons like a net)
-more weapon types (especially range) and attack animations (which I believe you'll add anyways I am just saying)
-revamp the enchant system and add more Intractive enchantments then just a icicle and fireball
-more clothing and character customizing stuff (mainly more hair options)
-Kinks that would be nice to add Inflation, bondage, rough play kinks
(thats all i can think of right now)
(ah a little ps this game looks amazing and has alot of potential so please do not burn yourself out on making this game i wouldn't want this to be abandoned i am just adding my 2 cents in places that can be improved and maybe new mechanics to add)