Were so glad you like it! We definitely plan to continue to a full release ♡
Also thank you for your detailed feedback!
The other island isn't currently available - we probably should have added a "coming soon" text for it to make that more clear and will add that to our list.
The UI definitely needs and is going to get some love visually and functionally
Were still ideating and building additional mechanics and progression for sure. One area of debate is whether or not we should create a railroaded storyline or if we should only add lore passively like in the Nimikins descriptions. Would you have a preference?