you mentioned a hellhound heroine. Will she be with the pack (like Saffron is with the goblins) or alone like Aria?
Her Pack are the Werewolves, she is a more "civilised" beast girl that left one of the bigger demon cities and went to live in the "Countryside" so to speak.
there's still no progress in getting a higher rank with the PC. Is that the next step after the next love interest is done?
Your first task from the Queen after you reach a certain Rep level with Goblins will be to deal with the Hellhound Heroine who is acting too independent for the Queen's liking. Once you succeed your rank will go up by 1.
What will be the benefits of reaching a higher rank? Maybe getting access to areas with more love interests that are blocked until the PC isn't just a delivery boy anymore? Or being able to visit the queen again?
Aside from letting you increase your stats slightly (you will probably get to choose which), there will likely be other bonuses such as a Bonus to skills like Charisma and Sex when interacting with demon realm denizens such as Goblins, Oni, etc... I'm also considering the possibility of making Human NPCs gradually turn more hostile to you (at least as initial reaction on meeting you) as your Rank increases.
There will probably be other things like decreased chances of you getting violated at Night when you sleep in your bed (events like this are coming in the near future).
And yes, certain future quests and interactions could be locked behind Rank level or at least influenced by it.
you mentioned a good while ago that you plan to give the PC an updated look since you said your skills have increased (I can agree to that after the new Saffron scene) and you are not happy with his current design. Is this a goal for the near future and will existing old CGs get an update too?
This is probably something I'll do much later. Basically, I don't want to change the PC graphic every year or so as I get better, I would rather just fix it closer to the end.
As for the older sex CGs... I might remake them eventually but I would rather work on new ones instead (for now at least).
can the love interests become companions too who fight with the player (as long as they aren't preggo) or are they always bound to their village/home?
I haven't decided on this yet. For now I plan to let the daughters you have with the Heroines join you as party members, but no eta on that yet, though I have some ideas on Aria's and Saffron's daughters and their designs.
is fast travel and a world map planned or will the good old "move from map area to map area" always be the main way to move around?
Fast travel is planned in the Hellhound update. World Map is planned as well but will likely come much later, for now the fast travel menu will be rather simple.
will there be a village we can help to build up from the very beginning with the help of a love interest to become a leader too?
Maybe. I have some ideas for a Management mini game. Though it may be in the form of an Inn that you run with a Heroine or a Military Camp/Town. This will likely come after the Witch update so it is still far away.
will the different races have some sort of conflict at some point and are close to start a war with each other and we have to keep the peace at some point or is the queen very strict and won't allow that at all?
There will likely be a border conflict between Humans and Demons where you will be sent to (on the side of Demons), but there will likely be different ways of solving that conflict, including the possible take over of the Human town and running it as a governor yourself (as mentioned above).
As for conflicts between Demon Realm races... not to that extent, though there could be some rivalry between Orcs and Elves where you might need to take a side. But this too will likely only happen after the Witch update.
she was a loving wife she had 100 affinity and suddenly the next day I see her in the scene of the lake and she says that she had slept with another in the burden and came out and it did come out in the newspaper but what surprises me is that she said that her last pregnancy was of a barbarian and in the burden there was only a magician and a cleric.....
I will keep an eye on this...
Any plans to implement the ability to invite local npc's to your home for casual sex? Maybe then you can have the animated sprite sex animation play out with the main character in your home.
No plans... though it doesn't mean that it wont happen at some point!
There ARE however, plans for them visiting YOU in your home when you least expect it! I even plan to introduce an ability to lock your door to keep unwanted visitors out.
Using the Sprite animations in your home is pretty difficult because your home does not have a set location where your bed is placed... or if you have multiple beds, so these animations will likely only happen in some events, like when you're stuck in prison for pickpocketing, etc...