I left a review with my main problems, mainly the movement speed and large map with nothing of importance, also I forgot to add there was a bug where as the prostitute I tried to enter the residential district and could no longer move after the pop up saying this feature is not yet implemented
I have tried to address some other of your points:
1. The overworld sprites are secondary as this focuses mostly on animated 2D CG art, they are just a means to get around and be interacted with/upon.
That being said, they can look better or worse depending on the colors you pick: If you were to pick red eyelids and then color the rest pure black (0,0,0) it would look... Weird.
Granted the shading would still work despite it being 0,0,0 it is not a good idea to use that much dark tonality even if the choice is given, it can be useful to give more life to your sprite's eyes (0,0,0 eyelids against a pale tonality).
2. The menu sprite is a full overview of the body, it is meant to show the clothing except... There is no inventory yet, the clothes on the overworld sprite are hard-coded in to avoid walking around naked, that image is and will always be static because it will be the only sprite that will show a full view of the body.
You could say it is an upgrade to the overworld sprite... Having a 600px thing walk around in a map would probably be a bad idea but having a 600px sprite to fill part of the menu and show you a better view of the body or clothes you are wearing is definitively better.
What you may feel that is missing is a close-up to show the various emotions and reactions of the character, which is something that will be added on R3 as well:
In R3 it will be added only when interacting with the purchased slave but I am thinking about adding this face (toggeable) even during dialogue, it will never appear on main menu though as it would make no sense (And yes, it is surprisingly animated as well).
3. I have tested various times the reported bug and could not replicate it: I tried to stick the character inside the collision but it gets pushed back in place.
Tried with run/walk speed to poke through but the dialogue only appears once and once it closes the movement is enabled again.
It is either a pretty obscure bug that only triggers in some occasions or you hid the dialogue box by mistake.
I hope you will give the game another chance in future and thanks for trying out the game and taking your time to write your opinion and report bugs.
I really appreciate it and should you find another bug or would like to see a feature implemented in the game do let me know.