IC filled. I'm in favor of adding minivan 40s support to the kit if possible.
Here's a quick mockup of how 4-key 40s and yellow accents could look rolled into the current base:Show Image(https://i.imgur.com/xJpxOaG.jpeg)
There appears to be a duplicate R2 1u Esc key (yellow) in the kit. You can remove it since one is enough for all layouts.