I think I asked for these before (maybe in the Nano forum) but could you start building f2fs and nfsv4 support into the kernel? I’ve been using f2fs on the Jetsons since the beginning for all filesystems (except boot/APP) and it’s been working great.
f2fs is the Flash-Friendly File System developed by Samsung… https://www.kernel.org/doc/html/v5.7/filesystems/f2fs.html
It’s the default filesystem for Android now and offers both performance and reliability benefits over ext4 when used with flash devices. I’m not asking fro it to become the default for the root filesystem but if you build it in we can make that decision ourselves.