sha2 based, and faster than md5? do you really not see the value in this? sure you wouldn't want to use this your own coin, because of say asic, and gpu miners, and your saltless password hash for bruteforcing issues.

but databases, filesystems, checksums for packages, git(to be fair, they're all some sort of storage systems)

by the definition you said above we would still be using md5 in everything.