Yes, that's true that going back and forth not always convenient. I was trying to find this balance between "Staying focused on one principle at a time" and "Having all info be easily accessible at glance". Probably I didn't find the perfect balance yet :D

But, there is also the extensibility aspect. With the current approach, I may add more details to each letter in the future while keeping the entry page still readable. Technically it is possible to even add more nested sub-sketches to each letter if needed