Several *nixes (Debian, Devuan, Arch, Fedora, Solaris, possibly others) either have already implemented or will soon be implementing "merged /usr" where /{bin,sbin,lib,lib64} are just symlinks to /usr/{bin,sbin,lib,lib64}
Supposed advantages of this filesystem hierarchy are outlined
here.
I know that in TCL there is the convention of /usr/local/{bin,sbin,lib} being reserved for extensions. A merged /usr would not interfere with this.
Would a merged /usr in TCL be more trouble than it's worth? More elegant but not actually beneficial? No trouble to implement and potentially beneficial in the long term?
I'd be curious to know the TCL developers' opinion about merged /usr. I admire you guys and greatly value your opinions because they have proven to lead to the best result (Tiny Core Linux).