One of the original improvements was the doors would have meaning - that is done already.
Although it won't be as visually obvious until each room has it's own furnishings/look.

But you can already travel around the castle, with today's mostly empty rooms. In the video I put one treasure chest in the second room.
When you unlock a room - it is remembered. But for now....it'll be the next video before the real visual feast is ready to be unveiled.

I'm putting you know, more than 5 colors on my screens anyway - 7 or 8 usually.