As someone who likes split keyboards, I’m really curious why such a large layout was chosen—there doesn’t seem to be any explanation for it.
With a 4x7 layout, it feels like there would be excessive finger movement from the home row when actually typing.
There’s no mention of any ergonomic testing or analysis of finger travel distance either.
Thanks. 
1. Regarding the Large Layout: We chose such a large layout because I personally really like the Lily58 and Altair; I find them very comfortable to use, and they are the most suitable for beginners. I hope this board will attract newcomers to the hobby. The split keyboard community doesn't seem to lack budget boards, but it is missing high-quality premium boards, which is the reason why I created this one. However, I will certainly include the ergonomic testing and finger travel distance analysis in the IC update.
2. Following this project, we will release a Bella-Lite with a smaller layout, closer to the standard 4*6 or 4 * 7 layout!