I really hope the next project is on Eagle. I really don't like Kicad much.
As an assembler/fabricator, I will be ordering almost 200k resistors and capacitors within the next. week. I have spent many hours going through the BOM looking for the best value from countless suppliers and looking at alternate parts as some parts have 13 week lead times. There is one part that for a run of 500 K16's, I need almost 100,000 of them.
My son and I will be building 50 of the K16's for ourselves and I will run most of them separately on USB hubs. A few we will klego together just to prove out the capability.
Hold off on R47, C274 as they are changing. R47 may be dropped or moved.
Make sure you check current parts list as R45, R46 just changed.
The 0.47 uF cap is a nuisance as it's high qty tends to push you out of the stock-on-hand category, but there are quite a few alternates that could be used and some have typically had quite high stock levels.
I think that's all I have for the moment.
The reference design uses 470 ohm for R45 and R46. Wondering once you place all 16 Avalon chips if you might need a lower resistance to ensure a decent rising edge on the report signals. Next time you are looking at signals can you measure the rising edge of one of the report signals? I am just curious how many nano seconds its takes for the report signals to go from low to high with one ASIC installed and the 1K ohm pull up.