As you can see in the changelog, there is no new scenes about Chichi in V0.07. However I'm currently working on new ones. Look at the walkthrough about Snake Way and Hell to see what more you can do
I'm glad you like the game and I'm sure you can understand that this game won't be possible without any financial support.
1) Yes I tend to do multiple things at once and I don't complete it because I don't know if players will like it or not. That's why I try things and wait for feedbacks. Most the things you talked about were already here for the first alpha version and I hope to finish them in futur updates.
2) Honestly I would like to create something like that however it will require a HUGE amount of work. Most open worlds work like that so it will stay as it is for now.
Thank you for your suggestions