I think the syscall translation part is an irrelevant hack, seems silly to act like that is what makes the project more useful because it does not guarantee performance, compatibility or stability.
The syscall translation makes it more useful than the previous UNIX subsystem, because it means it can near-perfectly emulate a popular POSIX-like system (Linux), and thus be compatible with most of its software, rather than being its own eccentric platform that existing POSIX software must first be ported to.
I don't see the value if it's not more stable than "excentric" platforms like Cygwin and MSYS, but I guess I wouldn't use it either way because there's no way I'm installing Windows 10 on my hardware.
