>>> 1) background fsck

>> [ suggestions of various other filesystems ]

> Please stay realistic! None of those could be implemented in the Soc
> timeframe. Don't  overextend the participating students and risc the
> failing of another project.

NetBSD has soft updates.  It works.
FreeBSD has soft updates and background fsck.  It works.

I think that adding background fsck to NetBSD should be a quite
reasonable SoC project, especially with FreeBSD as an example.